ASTM A182 316L RF Stainless Steel Threaded Flange

ASTM A182 316L RF Stainless Steel Threaded Flange
　　Structure: Round
　　Sealing Surface: RF
　　Trademark: Shengtian
　　Specification: API, ISO
　　Standard: ANSI, DIN, GB, JIS
　　Material: Stainless Steel
　　Connection: Threaded
　　Manufacturing Way: Forging
　　Pipe Fitting: ISO9001
　　Transport Package: Pallet, Wooden Case
　　Origin: China

ANSI B16.47 Class 150-2500 Threaded Flanges

　ANSI B16.47 Class 150-2500 Threaded Flanges
　　Type: Threaded
　　Structure: Round
　　Sealing Surface: MFM
　　Certificate: API 5L
　　Trademark: Shengtian
　　Specification: API, ISO
　　Standard: ANSI, DIN, GB, JIS
　　Material: Stainless Steel
　　Connection: Screws
　　Manufacturing Way: Forging
　　Pipe Fitting: ISO9001
　　Transport Package: Pallet, Wooden Case
　　Origin: China

GOST-12821-80 Wn Carbon Steel Threaded Flange

GOST-12821-80 Wn Carbon Steel Threaded Flange
　　Size: 1/2"-72" or Customized
　　Pressure: 150#, 300#, 600#,900#,1500#, 2500#
　　Structure: Threaded
　　Sealing Surface: FM
　　Transport Package: Wooden Package and Steel Package
　　Origin: China
　　Standard: ANSI, DIN, GB, JIS
　　Material: Carbon Steel
　　Connection: Flanged
　　Manufacturing Way: Forging
　　Trademark: Shengtian

ASME B16.5 A182 F304 Stainless Steel Plate Flange

　ASME B16.5 A182 F304 Stainless Steel Plate Flange
　　Type:Plate Flange
　　Structure: Flanges
　　Sealing Surface: RF
　　Size: 1/2"--24"
　　Transport Package: Pallet/Wooden Case
　　Standard: ANSI, DIN, GB, JIS, GOST, BS
　　Material: Stainless Steel
　　Connection: Flanged
　　Manufacturing Way: Forging
　　Size : 1/2"--48"
　　Trademark: Shengtian
　　Origin: China

ASTM A182 F51 Forged Stainless Steel Plate Flange

　ASTM A182 F51 Forged Stainless Steel Plate Flange
　　Type: Plate Flanges
　　Structure: Flanges
　　Sealing Surface: RF
　　The Application: Water, Oil, Gas and Plumbing
　　Transport Package: Pallet
　　Origin: China
　　Standard: ASTM
　　Material: Stainless Steel
　　Connection: Flanged
　　Manufacturing Way: Forging
　　Trademark: Shengtian
　　Specification: Class 150-900

DN900 Stainless Steel Large Plate Flange

　DN900 Stainless Steel Large Plate Flange
　　Size:15mm-6000mm
　　Material:Stainless Steel
　　Pressure:150#-2500#
　　Standard:DIN, ASTM DIN EN BS JIS GOST etc
　　Origin:China
　　Type:Plate
　　Packing:Plywood\wooden Pallets
　　Application:Petrochemical industy;avation and aerospace industry;
　　pharmaceutical industry;gas exhaust;
　　power plant;ship buliding;water treament,etc.

ANSI B16.5 Calss 150- 2500 Socket Flanges

　ANSI B16.5 Calss 150- 2500 Socket Flanges
　　CL.: calss 150-2500
　　Type: Slip-on Flanges
　　Structure: Flanges
　　Sealing Surface: FF
　　The Application: Water,Oil,Gas and Plumbing
　　Transport Package: Pallet
　　Origin: China
　　Standard: ANSI, DIN, GB, JIS, GOST, BSW
　　Material: Carbon Steel
　　Connection: Flanged
　　Manufacturing Way: Forging
　　Trademark: Shengtian
　　Specification: Class 150-2500

DIN 2527 PN16 Stainless Steel Socket Flange

DIN 2527 PN16 Stainless Steel Socket Flange
　　Type: socket
　　Structure: Round
　　Sealing Surface: RF
　　Surface Painting: Black, Anti-Rust Oil, Varnish
　　Application: Gas/Oil/Chemical/Shipbuilding
　　The Third Party Inspection: Available
　　Pressure: Class300
　　Trademark: Shengtian
　　Specification: 1/2"-24"
　　Standard: ANSI, DIN, GB, JIS, GOST, BSW, Ce
　　Material: Stainless Steel
　　Connection: Flanged
　　Manufacturing Way: Forging
　　Delivery Time: Within 25days
　　Packaging: Plywood Pallet, Case, Carton
　　Transport Package: Plywood Pallet, Case, Carton Box
　　Origin: China

DIN 2512 PN16 Stainless Steel Socket Flange

　DIN 2512 PN16 Stainless Steel Socket Flange
　　Structure: Flanges
　　Sealing Surface: RF
　　Size Range: 1/2" to 80"
　　Pressure: 150#, 300#, 600#,900#,1500#, 2500#
　　Material:Stainless Steel 304/304L, 316/
　　Package: Seaworthy Plywooden Case, Wooden Pallet
　　Trademark: Shengtian
　　Standard: ANSI, DIN, GB, JIS, GOST, BSW
　　Material: Stainless Steel
　　Connection: Flanged
　　Manufacturing Way: Forging
　　Wall Thickness for socket flange: Std, Sch40, Sch80, Sch160. Schxxs
　　Coating: Black Paint, Yellow Transparent Paint, Cold and Ho
　　Pressure : Pn6, Pn10, Pn16, Pn25, Pn40, Pn64, Pn100
　　Production Time: 15~60 Days
　　Transport Package: Wooden Case or Plywood Pallet
　　Origin: China

ANSI Class300 Forged Alloy Steel Weld Neck Flanges

　ANSI Class300 Forged Alloy Steel Weld Neck Flanges
　　Type: Weld neck
　　Structure: Flanges
　　Sealing Surface: MFM
　　Size: 1/2"-200"
　　Certificate: ISO9001:2008, SGS, BV, API etc
　　Trademark: Shengtian
　　Specification: ISO, SGS, BV, API
　　Standard: ANSI, DIN, GB, JIS, GOST, BSW
　　Material: Alloy Steel
　　Connection: Welding
　　Manufacturing Way: Forging
　　Technical: Forging
　　Productivity: 500tons/Month
　　Transport Package: Plywood/Wood Pallet and Case, etc.
　　Origin: China

DIN 2527 PN16 Stainless Steel Weld Neck Flange

DIN 2527 PN16 Stainless Steel Weld Neck Flange
　　Type: Welding Flange
　　Structure: Round
　　Sealing Surface: RF
　　Size : Dn15-Dn2000
　　Materials: Carbon Steel, Stainless Steel, Alloy Steel
　　Transport Package: Wood Case, Wood Pallet, Plywood Pallet.
　　Standard: ANSI, DIN, GB, JIS, GOST, BSW, Uni
　　Material: Stainless Steel
　　Connection: Welding
　　Manufacturing Way: Forging
　　Weld Neck Flange Standard: ANSI, DIN, BS, Uni, GOST, En1092
　　Trademark: Shengtian
　　Origin: China

ANSI B16.5 Class 600 Forged Carbon Steel Weld Neck Flanges

ANSI B16.5 Class 600 Forged Carbon Steel Weld Neck Flanges
　　Type: Welding Flange
　　Structure: Flanges
　　Sealing Surface: RF
　　Surface: Machined by CNC
　　Size: 15mm-6000mm
　　Trademark: Shengtian
　　Specification: With Waterline
　　Standard: ANSI, DIN, GB, JIS, GOST
　　Material: Carbon Steel
　　Connection: Welding
　　Manufacturing Way: Forging
　　Face: RF Rtj
　　Pressure: 150#-2500#
　　Transport Package: Plywooden Case or Pallet
　　Origin: China

ASME B16.48 A182 Stainless Steel Spectacle Blind Flange

　ASME B16.48 A182 Stainless Steel Spectacle Blind Flange
　　Type:Blind Flange
　　Structure: Flanges
　　Sealing Surface: RF
　　Size, Seamless: 1/2"--24"
　　Transport Package: Pallet/Wooden Case
　　Standard: ANSI, DIN, GB, JIS, GOST, BS
　　Material: Stainless Steel
　　Connection: Flanged
　　Manufacturing Way: Forging
　　Size : 1/2"--48"
　　Trademark: Shengtian
　　Origin: China

ANSI B16.5 Class 300 Stainless Steel Blind Flange

　ANSI B16.5 Class 300 Stainless Steel Blind Flange
　　Structure: Flanges
　　Sealing Surface: RF
　　Application: Industry
　　Pressure: Sch5c-Sch160
　　Transport Package: Ply Wooden Cases or Pallet
　　Origin: China
　　Standard: ANSI, DIN, GB, JIS, GOST
　　Material: Stainless Steel
　　Connection: Flanged
　　Manufacturing Way: Forging
　　Certificate: TUV ,Ce, ISO9001:2008
　　Shipment Term: by Sea or by Air
　　Trademark: Shengtian
　　Specification: 1/2"-48"

ASME B16.5 Class 600lb Alloy Steel Blind Flange

ASME B16.5 Class 600lb Alloy Steel Blind Flange
　　Type: Welded Neck,Socket,Threaded,Blind,Lap Joint etc
　　Structure: Round
　　Sealing Surface: FF,RF,Rtj Ect
　　Kind: So,Wn,Lap Joint,Blind,Socket,Threaded Ect
　　Application: Pipe Connection
　　Transport Package: Wooden Case/Pallet
　　Origin: China
　　Standard: ANSI, DIN, GB, JIS, GOST
　　Material: Carbon Steel,Stainless Steel,Alloy Steel
　　Connection: Welded,Sw,So,Threaded
　　Manufacturing Way: Forging
　　Surface Treatment: Painting,Oiled, Galvanized etc
　　Trademark: Shengtian
　　Specification: 1/2 Inch-72 inch

API K55 Seamless Steel Petroleum Oil Casing

API K55 Seamless Steel Petroleum Oil Casing
　　Standard:API
　　Outer Diameter:114.30 - 508 mm
　　Size:1/2"-20"
　　Thickness:5.21 - 16.13 mm
　　Certification:API
　　Technique: Hot Rolled
　　Surface Treatment: Black
　　Section Shape: Round
　　Type: Seamless
　　Material: Carbon Steel
　　Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
　　Certificate: API ISO SGS
　　Transport Package: Export Standard Packing
　　Origin: China

Q235 48mm Hot Dip Galvanized Steel Pipe

　Q235 48mm Hot Dip Galvanized Steel Pipe
　　Technique: ERW
　　Surface Treatment: Galvanized
　　Section Shape: Round
　　Diameter: 20mm-150mm
　　Zinc: 220
　　Origin: China
　　Type: Welded
　　Material: Carbon Steel
　　Usage: Pipeline Transport, Machinery Industry, Construction & Decoration
　　Thickness: 1.2mm-6mm
　　Pipe Section: Round
　　Trademark: Shengtian

3PE Sch 120 Carbon Welded Spiral Steel Pipe

　3PE Sch 120 Carbon Welded Spiral Steel Pipe
　　Standard: ASTM, GB, API, DIN, JIS
　　Medium: Liquid
　　Connection Type: Welding
　　Trademark: Shengtian
　　Specification: 219-3020
　　Material: Carbon steel
　　Diameter: 273mm
　　Cross-Section Shape: Round
　　Surface: 3PE/2PE/Fbe/Epoxy Coating
　　Transport Package: in Bulk
　　Origin: China

API 5L Gr.B DN 200 welded steel ERW pipe for gas pipe line

　API 5L Gr.B DN 200 welded steel ERW pipe for gas pipe line
　　Outer Diamater: 21.3-660.4mm
　　Application: Low and Middle Pressure Fluid Transportation Pipe
　　Payment Term: L/C, T/T etc
　　Transport Package: in Budles or According to Customer Request
　　Origin: China
　　Trademark:Shengtian
　　Thickness: 1.5-25.4mm
　　Finished Treatment: Plain/Beveled/Thread/Coupling/Pipe Cap
　　Length: 1-12m or as Customers Required
　　Specification: 21.3-660.4mm*1.5-25.4mm

API 5L X46 Seamless Steel Pipe

API 5L X46 Seamless Steel Pipe
　　Technique: Hot Rolled
　　Surface Treatment: Black Painting,Galvanized,Fbe/3lpe/3lpp Coating
　　Section Shape: Round,Square,Rectangular,Oval
　　Manufacture Method: Hot Rolled,Hot Expansion,Cold Drawn
　　Trademark: Shengtian
　　Specification: 1/2"-28′
　　Type: Seamless
　　Material: Carbon Steel
　　Usage: Pipeline Transport, Boiler Pipe, Machinery Industry, Chemical Industry, Construction & Decoration
　　Length: Customized
　　Surface: Black,Galvanized,Coating
　　Thickness: 3-45mm
　　Transport Package: External Black Painting, Both Side with End Caps
　　Origin: China

Large Caliber ASTM B16.9 Equal Carbon Steel Pipe Tee

　　Large Caliber ASTM B16.9 Equal Carbon Steel Pipe Tee
　　Connection: Welding
　　Shape: Equal Tee
　　Head Code: Round
　　Finish: Black Painting
　　Pressure Rating: 2000LBS
　　Certification: ISO, API, CE, SGS, BV
　　Trademark: Shengtian
　　Specification: 1m*1m*1m
　　Type: Equal
　　Material: Carbon Steel
　　Lateral: 90°Tee
　　Wall Thickness: SCH80
　　Technics: Forged
　　Standard:ASTM

1/2inch Stainless Steel NPT Thread Screw Pipe Fitting Union

　1/2inch Stainless Steel NPT Thread Screw Pipe Fitting Union
　　Shape: Equal
　　Angle: 90 Degree
　　Material: Stainless Steel
　　Certification: ANSI
　　Size: 1/2"-24"
　　Connection: Welding
　　Head Code: Round
　　Wall Thickness: STD
　　Technics: Pushing
　　Color: Silver
　　Trademark: Shengtian
　　MOQ: 50PCS
　　Standard: DIN, JIS, ASTM, BS
　　Steel Grade: 304, 304L, 316, 316L, A350 Lf2, 321, 347, 347H
　　Delivery Time: 7-10days
　　Transport Package: on Wooden Box or on Pallet
　　Origin: China

High pressure pipe fittings weld outlet

　High pressure pipe fittings weld outlet
　　Material:Carbon Steel
　　Size : 1/8" - 4"
　　Origin:China
　　Connection:Welding
　　Technics:Forged
　　Packing: Wooden cases or wooden pallet or as per customers requirement
　　Standard: ASME B 16.11, MSS-SP-79\ 83\ 95\97
　　Delivery Time: 25 days after order conformed
　　Payment: By T/T or L/C

ASME B16.11 Forged Screwed Pipe Fittings

　ASME B16.11 Forged Screwed Pipe Fittings
　　Molding Type: Forging
　　Application: Machinery Parts
　　Heat Treatment: Normalizing
　　Standard: ASME
　　Trademark: Shengtian
　　Specification: ASME
　　Processing Object: Metal
　　Molding Technics: Forged
　　Material: Steel
　　Surface Treatment: Hot Galvanized
　　Certification: ISO 9001:2000, ISO 9001:2008
　　Transport Package: Palywood Box, Wooden Pallet
　　Origin: China

Forged Stainless Steel 6000lbs Welding Socket Pipe Fitting

　Forged Stainless Steel 6000lbs Welding Socket Pipe Fitting
　　Technique: Forged
　　Type: Welding
　　Connection: Female
　　Trademark: Shengtian
　　Origin: China
　　Standard: MSS SP-83
　　Nominal Diameter: DN25
　　Material: Stainless Steel
　　Size: 1/2"-4"
　　Specification: CE ISO

1/2" ANSI B16.5 Stainless Steel Threaded Flange

　1/2" ANSI B16.5 Stainless Steel Threaded Flange
　　Type: Threaded Connection Flange
　　Structure: Round
　　Sealing Surface: RF
　　Trademark: Shengtian
　　Specification: API, ISO
　　Standard: ANSI, DIN, GB, JIS
　　Material: Stainless Steel
　　Connection: Screws
　　Manufacturing Way: Forging
　　Pipe Fitting: ISO9001
　　Transport Package: Pallet, Wooden Case
　　Origin: China

ASME B16.5 class 150 Stainless Steel forged slip on flange

　ASME B16.5 class 150 Stainless Steel forged slip on flange
　　Type: Slip On
　　Structure: Flanges
　　Sealing Surface: RJ
　　Trademark: Shengtian
　　Specification: DN15-3000
　　Standard: ANSI, DIN, GB, JIS, GOST, BSW
　　Material: Stainless Steel
　　Connection: Welding
　　Manufacturing Way: Forging
　　Transport Package: Wooden Cases or Wooden Pallets or as Per Customer
　　Origin: China

ASME B16.36 Carbon Steel RF Socket Flanges

　ASME B16.36 Carbon Steel RF Socket Flanges
　　Type:Socket Flange
　　Structure: Flanges
　　Sealing Surface: RF
　　Size: 1/2"--24"
　　Transport Package: Pallet/Wooden Case
　　Standard: ANSI, DIN, GB, JIS, GOST, BS
　　Material: Carbon Steel
　　Connection: Flanged
　　Manufacturing Way: Forging
　　Size : 1/2"--48"
　　Trademark: Shengtian
　　Origin: China

PN40 Stainless Steel Weld Neck Flanges

PN40 Stainless Steel Weld Neck Flanges
　　Type: Welding Flange
　　Structure: Round
　　Sealing Surface: RF
　　Size : Dn15-Dn2000
　　Transport Package: Wood Case, Wood Pallet, Plywood Pallet.
　　Standard: ANSI, DIN, GB, JIS, GOST, BSW, Uni
　　Material: Stainless Steel
　　Connection: Welding
　　Manufacturing Way: Forging
　　Weld Neck Flange Standard: ANSI, DIN, BS, Uni, GOST, En1092
　　Trademark: Shengtian
　　Origin: China

Dn1300 Stainless Steel 316L Blind Flanges

　Dn1300 Stainless Steel 316L Blind Flanges
　　Size: 1/2-24
　　Type: Threaded Connection Flange
　　Structure: Round
　　Sealing Surface: FM
　　Trademark: Shengtian
　　Specification: DN1300
　　Standard: ANSI, DIN, GB, JIS
　　Material: Stainless Steel
　　Connection: Screws
　　Manufacturing Way: Welding
　　Transport Package: Bulk Package
　　Origin: China

Carbon Steel 180 Degree Pipe Fittings Bend

　Carbon Steel 180 Degree Pipe Fittings Bend
　　Material: Carbon Steel
　　Technics: Forged
　　Type: punched bend
　　Origin: China
　　Size: 1/2''-48''
　　Brand Name: Shengtian
　　Connection: Welding
　　Shape: EqualHead Code: Round
　　Applications: Petroleum, chemical, power, gas, metallurgy, shipbuilding
　　Surface treatment: Antirust oil, antirusting paint or as per customers requirement
　　End: BW
　　Technology: Welded

En 10253-1316 Stainless Steel Pipe Fitting Cap

　En 10253-1316 Stainless Steel Pipe Fitting Cap
　　Connection: Welding
　　Material: Stainless Steel
　　Certification: ISO, API, ANSI, DIN, JIS, ASME, GB, BS, SH, HG, CE
　　Application: Buliding
　　Trademark: Shengtian
　　Origin: China
　　Head Code: Round
　　Shape: Equal
　　Technics: Forged
　　Special Function: High Voltage
　　Size: Seamless: 1/2 to 24 Inches
　　Welded: 24′′-72′′ Inche

ASTM 304L Seamless Ss Eccentric Pipe Fittings Reducer

　ASTM 304L Seamless Ss Eccentric Pipe Fittings Reducer
　　Dimension: 1/2" to 120"
　　Wall Thickness: SCH5 to XXS
　　Standard:ASME/ANSI B16.9、MSS SP-75、DIN 2616、GOST17378
　　Material:Stainless steel
　　MOQ: 10pieces
　　Transport Package: Wood Box or as Per Requirement
　　Origin: China
　　Standard: DIN, ANSI, GB, JIS, BSW
　　Connection: Female
　　Head Type: Round
　　Thickness: Sch5-Sch160, Std, Xs, Xxs or Made by Your Demand
　　Inspection: in-House or The Third Party
　　Trademark:Shengtian

A234 Wpb Seamless Carbon Steel Reducing Tee

　A234 Wpb Seamless Carbon Steel Reducing Tee
　　Type: Reducing
　　Connection: Welding
　　Lateral: 90°Tee
　　Finish: Black Painting
　　Certification: ISO, API, CE
　　Applications: Petroleum, Chemical, Power, Gas, Metallurgy, Shipb
　　Specification: DN10-DN1200
　　Standard: ASTM
　　Trademark: Shengtian
　　Transport Package: Pallet and Plywood Case
　　Origin: China

316L 90 Degree Stainless Steel Pipe Fitting Elbow

　316L 90 Degree Stainless Steel Pipe Fitting Elbow
　　Shape: Equal
　　Angle: 90 Degree
　　Material: Stainless Steel
　　Certification: ASME, ANSI, DIN
　　Trademark: Shengtian
　　Specification: DN15-DN150
　　Connection: Welding
　　Head Code: Round
　　Wall Thickness: Sch10
　　Technics: Forged
　　Color: Silver
　　Transport Package: Plywood Case or Pallet
　　Origin: China

DN2400 Large diameter Pipe Fitting Bend

DN2400 Large diameter Pipe Fitting Bend
　　Standard:ASME
　　Size:Customized
　　Color:Black
　　Thickness:DN2400
　　Material:Carbon Steel
　　Radius: 3D,4D,5D,6D,8D,10D
　　Transport Package: Regular Packing or Buyers′ Requirement
　　Origin: China
　　Trademark: Shengtian
　　Specification: SGS

30 Inch Large Diameter Stainless Steel Flanges

　30 Inch Large Diameter Stainless Steel Flanges
　　Type: Welding Flange
　　Structure: Round
　　Sealing Surface: FF
　　Pressure Ratings: Class 150, 300, 600, 900, 1500 and 2500
　　Transport Package: in Wooden Cases or Customers Requirements
　　Origin: China
　　Standard: ANSI, DIN, GB, JIS
　　Material: Carbon Steel & Stainless Steel &Alloy Steel
　　Connection: Welding
　　Manufacturing Way: Forging
　　Size: 1/2" - 72"
　　Trademark: Shengtian
　　Specification: TUV, ISO9001, BV, TS, CCS

Orifice Flange

Orifice Flange
　　Size:(1"~24")DN25~DN600
　　Pressure:CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500
　　Type:Flat Face(FF), Raised Face(RF), Tongue(T), Groove(G), Female(F), Male(M), Ring Joints Face(RJ)
　　Materials:Carbon Steel: ASTM/ASME A105, ASTM/ASME A516 Grade 55-60-65-70
　　Alloy Steel: ASTM/ASME A182 F1-F12-F11-F22-F5-F9-F91-F911-F92
　　Stainless Steel: ASTM/ASME A182 F304-F304H-F304L-F304N-F304LN F316-F316H-F316L-F316N-F316LN F321-F321H F347-F347H, ASTM/ASME A182 F51-F52-F53-F54-F55-F60-F61
　　Low-Temperature Steel: ASTM/ASME A522, ASTM/ASME A707 Grade L1-L2-L3-L4-L5-L6-L7-L8
　　High-Strength Steel: ASTM/ASME A694 F42-F46-F48-F50-F52-F56-F60-F65-F70
　　Standards:ASME B16.36-2009

High press Forged Pipe Fitting Half Coupling

High press Forged Pipe Fitting Half Coupling
　　Size:1/2" to 4"
　　Wall Thickness:3000LB to 9000LB
　　XS, Sch80, Sch160, XXS.
　　Standard:ASME/ANSI B16.11、MSS SP-79, MSS SP-83, MSS SP-114、JIS B2316, JIS B2302 etc.
　　Material:Steel
　　Trademark: Shengtian
　　Origin: China
　　Pressure: 2000lbs,3000lbs,6000lbs
　　Process: Forged
　　Specification: ISO

High pressure pipe fittings weldolet

High pressure pipe fittings weldolet
　　Material:Carbon Steel
　　Size : 1/8" - 4"
　　Origin:China
　　Connection:Welding
　　Technics:Forged
　　Packing: Wooden cases or wooden pallet or as per customers requirement
　　Standard: ASME B 16.11, MSS-SP-79\ 83\ 95\97
　　Delivery Time: 25 days after order conformed
　　Payment: By T/T or L/C

Heat treatment process for high press pipeline

Quenching and tempering is the double heat treatment of quenching and high temperature tempering. The purpose is to make the workpiece have good comprehensive mechanical properties.

　　Quenching and tempering treatment: quenching after high temperature tempering heat treatment method is called quenching and tempering treatment. Tempering at high temperature means tempering at 500-650 C. Hardening and tempering can make the properties of steel, material can be adjusted to a great extent, the strength of high pressure pipe fittings weldolet, plasticity and toughness are good, with good comprehensive mechanical properties. After tempering, the tempered Soxhlet was obtained. Tempered sorbite is formed when martensite is tempered. Pipe fittings weldolet can be distinguished by optical microscope more than 500-600 times. Pipe fittings weldolet is a composite structure of spherulite with carbide distributed in ferrite matrix. Pipe fittings weldolet is also a tempering structure of martensite and a mixture of ferrite and granular carbide. The ferrite at this time has basically no carbon supersaturation, and carbides are also stable carbides. Normal temperature is a kind of balance tissue.

Screwed pipe fittings is a pipe with a thread

　Screwed pipe fittings is a pipe with a thread. They are often used in water gas pipes, small diameter water pipes, compressed air pipes and low pressure steam pipes. The pipe is connected to the pipe end with the thread. Screwed pipe fittings can be coated with suitable adhesive (such as thick white paint, lead oxide glycerin adhesive, etc.) to ensure sealing.

　　Screwed pipe fittings is a pipe with a thread. They are often used in water gas pipes, small diameter water pipes, compressed air pipes and low pressure steam pipes. ASME B16.11 Forged Screwed Pipe Fittings is connected to the pipe end with the thread. Screwed pipe fittings be coated with suitable adhesive (such as thick white paint, lead oxide glycerin adhesive, etc.) to ensure sealing.

　　Hebei Sheng Tian Group Co., Ltd. provides various domestic and foreign standard Screwed pipe fittings according to different needs of customers.

Weld outlet are machined from solid forgings

Weld outlet are machined from solid forgings. The quality of the fittings is critical in that they are designed to withstand higher pressures. In designing forged fitting weld outlet, the most important factors are: uniformity of wall, wide bands, sharp threads properly chamfered and unrestricted flow.

　　A very important process of pipe fittings weld outlet, most of which are painted antirust paint, can be painted with two methods, High pressure pipe fittings weld outlet is to brush directly on the pipe, the other is to use a spray gun, it is necessary to clear the pipe, so that it can be painted, it can not have soil, hairs, impurities, or so on. It will affect the effect of the paint.

　　Quality testing of weld outlet is very important, to see if its surface and inside is not smooth, there is no oxidation, if not qualified and reprocessing, the upper part of the pipe can not have a layer, no scars and wrinkles, some no serious scratches and small pits can be removed, in quality inspection, do not be in trouble. Must be careful.

Threaded union are threaded connections

Threaded union are threaded connections, which are the most common fittings in industry and life. The threaded union makes the connection of the pipe simpler, and the disassembly and replacement is easier, which greatly saves the cost of the pipe connection.

　　Industrial threaded union is usually made of metal, with high pressure resistance, carbon steel, stainless steel, alloy steel, brass and so on. The living threaded union materials are generally PC, PVC, PE and so on.

　　The movable 1/2inch Stainless Steel NPT Thread Screw Pipe Fitting Union can be widely applied to pipes with different diameters, and can also be used for water meters and valves. Because of the adoption of the socket structure, the pipe union is very convenient to reduce the cost, installation, use and maintenance, at the same time, it also has high leakage resistance, and has a very good market prospect.

The large caliber carbon steel pipe tee is used as a pipe fitting at the branch of the pipeline

　The large caliber carbon steel pipe tee is used as a pipe fitting at the branch of the pipeline. For large caliber carbon steel, there are two kinds of technology commonly used at present: hydraulic bulging and hot pressing.

　　Hot-pressing forming: hot-pressing forming is to flatten the tube blank larger than the diameter of the tee, about to the large caliber carbon steel pipe tee, a hole is made in the part of the drawing branch pipe; the tube blank is heated, put into the forming die, and in the tube blank into the drawing branch pipe punching die; under the action of pressure, the tube blank is radial compression, in the process of radial compression The middle metal flows to the branch pipe and forms a branch pipe under the stretching of the die.

　　The whole process is formed by the radial compression of the billet and the drawing process of the branch. Unlike the large caliber carbon steel pipe tee, the metal of the large caliber carbon steel pipe tee branch is compensated by the radial motion of the billet, so it is also called the radial compensation process. Due to the use of heating to suppress three passes, the equipment tonnage required for material forming is reduced. Hot-pressed tees have wide adaptability to materials and are suitable for low carbon steel, alloy steel and stainless steel, especially for Large Caliber ASTM B16.9 Equal Carbon Steel Pipe Tee pipe wall, which are usually formed by this process.

Defects of seamless steel pipe pickling

　In addition to stripping iron oxide scales, hydrogen diffuses into the billet matrix and aggregates at impurities or pores during pickling of seamless steel pipes, resulting in increased internal stress, reduced plasticity and increased brittleness of the steel. This effect is called hydrogen embrittlement. Hydrogen embrittlement is mainly affected by the diffusion rate of hydrogen atoms. The diffusion rate of seamless steel pipe is related to the following factors:

　　1) the diffusion rate of seamless steel pipe in sulfuric acid solution is higher than that in hydrochloric acid solution.

　　2) With the increase of pickling temperature, the diffusion rate of hydrogen increases sharply, but seamless steel pipe with the increase of acid concentration, the diffusion rate of hydrogen does not increase much. Therefore, it is best not to pickle at low temperature and high temperature.

　　3) Some inclusions in pickling, such as arsenic (As), antimony (Sb), hydrogen sulfide (H2S) and sulfur dioxide (SO2), API 5L X46 Seamless Steel Pipe increase the diffusion rate of hydrogen atoms, that is, increase the possibility of hydrogen embrittlement.

　　4) seamless steel pipe of chemical composition of steel also affects the diffusion of hydrogen atoms. The measures to prevent hydrogen embrittlement are to operate according to the prescribed acid concentration and temperature, to shorten the pickling time as far as possible, and to add corrosion inhibitors on time and in quantity.

Classification of ERW pipe

According to the different welding methods ,ERW steel pipe are divided into induction welding and contact welding , using hot-rolled wide steel coil as raw material, after pre-bending, continuous forming, welding, heat treatment, sizing, straightening, Cutting and other processes, compared with spiral welded pipe with short weld, high dimensional accuracy, uniform wall thickness, surface quality, high pressure, but the disadvantage is that only the production of small and medium-diameter thin-walled tube, weld prone to gray spot , Not fusion, groove-like corrosion defects. At present ,the application of a wide range of areas is the city gas, crude oil transportation.

　　ERW pipe, as one kind of welded steel pipes, is popular among consumers for transporting low pressure fluid. You can use it for many different applications. There are various kinds of ERW pipes for your selection both at home and abroad. The ERW is made from hot steel metal actually.

　　API 5L Gr.B DN 200 welded steel ERW pipe for gas pipe line moves through the welding electrodes since it involves flattening of the steel and passing it through a hot furnace. The copper disk type is connected to a secondary assembly of revolving transformers whose main function is to attach on each side of the seam. It makes it possible for temperature being raised up to the welding point. When the tube is leaving the electrodes, the outer flash is removed during the process. The air hamer can wipe out the inside flash when the tube has been cooled. End product can be called ERW pipe, which is short for electric resistance welded pipe.

　　ERW pipe or electric resistance welded steel pipe is used for different purposes both in domestic and commercial sectors. The ERW pipe can be classified into general pipes, galvanized pipes, metric pipes, roller tubes, automobile tubes. The main function of ERW pipe is for transporting low pressure fluid. There are some methods to testing the bending and flattening capacities, like surface quality.

Weld angle of spiral steel pipe

Spiral steel pipe is a kind of spiral seam steel pipe, which is welded by automatic double wire double-sided submerged arc welding process and is often extruded by warm extrusion.

　　The helical angle of spiral steel pipe weld is generally 50-75 degrees, so the synthetic stress of spiral weld is 60-85% of the main stress of straight welded pipe. Under the same working pressure, the thickness of the spiral steel pipe with the same diameter can be reduced than that of the longitudinal welded pipe.

　　1. When the spiral steel pipe is blasted, because the normal stress and synthetic stress of the weld are relatively small, the blasting hole generally does not originate from the spiral weld, and its safety is higher than that of the straight spiral steel pipe.

　　2. When there is a parallel defect near the 3PE Sch 120 Carbon Welded Spiral Steel Pipe, the danger of expansion of the spiral weld is not as great as that of the straight weld because the stress of the spiral weld is small.

　　3. Because the radial stress is the maximum stress on the steel pipe, the weld will bear the maximum load when it is in the direction of vertical stress. That is, the load that the longitudinal joint bears is the largest, and the load of the circumferential weld is the smallest, and the spiral seam is between the two.

What is the role of the oil pipeline

　The oil pipelinw is widely used in the manufacture of structural parts and mechanical parts, such as oil drilling rod, automobile drive shaft, bicycle frame, and steel scaffolding used in the construction and construction of mobile pictures. The use of oil pipe to make ring parts can improve material utilization, simplify the manufacturing process, save materials and work hours, such as rolling bearing rings, Jack sleeves, etc., which have been widely used in the manufacture of 6" Sch160 API 5L Psl1 Petroleum Oil Pipeline. Petroleum pipes are also indispensable materials for various conventional weapons. Barrels, barrels and so on are made of petroleum oil pipeline.

　　According to the shape of cross section area, the oil pipeline can be divided into circular pipes and special-shaped pipes. Due to the equal circumference, the largest area of the oil pipeline is the use of a circular tube to transport more fluid. Seamless steel pipe (GB9948-88) for petroleum cracking is a seamless steel pipe for furnace pipe, heat exchangers and pipes for petroleum refineries. The oil drilling pipe (YB528-65) is a seamless steel pipe used for thickening or thickening of oil drilling ends. There are two kinds of steel pipe split and no wire. The connection between the wire and the pipe is connected with the tool joint.

Development trend of boiler pipe Market

　As most of the current market resources are very scarce, specifications are more common breakage, which to boiler pipes prices continue to rise to a positive role in promoting. But at the same time, some businesses are worried about the price of the current boiler pipes. It is difficult to sustain the rise of the supplier's shrinkage. When the price of the boiler pipes rises to a high level, the price risk will gradually show up, and the latter will fall down in the later period. "The current business is not very optimistic about the future market, most people think that after the eighteen big closing or the increase in the steel plant, the price of ASME SA321 Seamless Carbon Steel Pressure Boiler Pipe market will be in danger of a big return.

　　On the raw material market,the domestic iron ore market fluctuated slightly, the Tangshan region market declined slightly, the spot market of imported mines was slightly up-regulated, the price of billet in Tangshan was steady, the other areas fell mainly, the desire for the pig iron increased and the coke was steadily increasing. In view of the current situation, the overall demand for boiler pipes is weak, and the raw material market is strong, which will form a certain support for the market. However, as today's snails are low and low, and the current manufacturer's mentality is generally not optimistic about the future market, it is thought that the decline is still changing, the operation is more cautious, so it is expected that the market of billet in the short term will be small.

Low temperature performance of stainless steel pipe

　The resistance, linear expansion coefficient, thermal conductivity, mass hot-melt and magnetic properties of stainless steel pipe will vary greatly at low temperatures. The coefficient of linear expansion decreases at low temperature, and the thermal conductivity and mass heat capacity decrease sharply at low temperature, and the young's modulus (longitudinal modulus of elasticity) increases at the same time when the temperature drops. Because the austenitic stainless steel pipe has a Ms point at low temperature (Subzreo temperature) (martensite metamorphosis or martensite formation temperature), martensite can be formed when it is kept below the Ms point. The formation of martensite at low temperature makes the representative steel SUS304 (18Cr-8Ni) of austenite series stainless steel nonmagnetic at normal temperature and become magnetic in low temperature environment.

　　A shell applied to a freezer. Ferritic AISI 304 Seamless Stainless Steel Pipe is a body-centered cubic structure, when the material properties show weakening, sharp cracks will rapidly expand and cause brittle failure. Because austenitic stainless steel is a face centered cubic structure, brittle failure will not occur. Arcane throwing stainless steel SUS304L (18Cr-9Ni-LC) and SUS 316L (18Cr-12Ni-2Mo-LC) show superior impact characteristics at low temperatures. However, it is necessary to pay attention to the precipitation of ferrite or the precipitation of martensite due to processing, and the tendency of embrittlement caused by the sensitization of carbides or equal phases of sigma.

How to store seamless pipes for storage

　(1) Sites or warehouses where seamless pipes are kept should be located in a clean and well-drained place away from factories and mines that produce harmful gases or dust. Remove weeds and sundries on the site and keep the pipes clean.

　　(2) in warehouses, materials that are corrosive to steel pipes must not be stacked together with acids, bases, salts and cements. Different types of seamless pipes should be stacked separately to prevent confusion and prevent contact corrosion.

　　(3) Some small steel pipes, thin steel plates, strips, silicon steel sheets, small-diameter or High-accuracy size seamless steel pipe, various cold-rolled and cold-drawn seamless pipes and high-priced and easily corrosive metal products can be stored in storage.

　　(4) Warehouses should be selected according to geographical conditions, generally using ordinary closed warehouses, that is, a warehouse with roof walls, tight doors and windows, with ventilation device

　　(5) the storehouse requires a clear day to pay attention to ventilation.

Corrosion resistance of Welded Steel Pipe

The general welded steel pipe is used for conveying low pressure fluid. It is made of Q195A, Q215A and Q235A steel. It can also be made of other mild steel which is easy to weld. Pipe to carry out hydraulic, bending, flattening and other experiments, there are certain requirements for surface quality, usually delivery length of 4-10m, often require fixed-scale (or double-scale) delivery. The nominal caliber of welded pipe is expressed by nominal caliber (millimeter or inch). The nominal caliber of welded steel pipe is different from the actual caliber. There are two kinds of welded steel pipe according to the prescribed wall thickness: normal pipe and thickened pipe. The steel pipe is divided into two types, one is with thread and the other is without thread, according to the pipe end form.

　　The corrosion resistance of API 5L Gr. B X46 Welded Steel Pipe is strong in acidic environment when it contains Ni. In sulfuric acid or hydrochloric acid environment, the higher the content of Ni in welded steel pipe, the stronger the corrosion resistance. In general environment, only adding Cr into welded steel pipe can prevent corrosion. The poor edge condition of the steel strip is another important reason for the wrong side. The effects of mass flow rate, heat flux density and structural parameters (the ratio of helical curvature diameter to welded steel pipe diameter, Dc/D) on the saturated bubbly boiling heat transfer coefficient in vertical helical tubes were investigated.

　　The production of T-shaped welded steel pipe occurs when the wrong side occurs, and there are many influencing factors. In production practice, the welded steel pipe is often degraded by the wrong side. Therefore, it is necessary to analyze the causes and preventive measures of the wrong side of the spiral steel pipe.

The difference between carbon steel pipe and seamless steel pipe

　Seamless steel pipe is made of perforated hot rolled steel pipe without weld. Sometimes the hot-worked pipes need to be further cold-worked in order to obtain the corresponding shape and size. Carbon steel pipes are generally made of round, square and flat after multiple rolling.

　　Seamless steel pipe is the most widely used pipe in petrochemical plant nowadays. The use of carbon steel pipes is more extensive. At the same time, carbon steel pipe is the main requirement of its chemical composition is carbon content, seamless steel pipe is a large type, refers to the seamless steel pipe, a wide range.

　　Brief Introduction of Carbon Steel Pipe: Carbon Steel Pipe refers to the steel pipe with welded surface after bending and deformation of steel strip or steel plate into circular, square and other shapes. The billet used for ASTM A53 API 5L sch 40 st35.8 seamless carbon steel pipe is steel plate or strip steel. Since the 1930s, with the rapid development of high quality strip continuous rolling production and the progress of welding and inspection technology, the quality of weld seam has been improved continuously, and the variety and specification of carbon steel pipe has been increasing day by day, and seamless steel pipe has been replaced in more and more fields. carbon steel pipe has lower cost and higher production efficiency than seamless steel pipe.

How to improve the rust resistance of galvanized steel pipes

　Although the use of galvanized steel pipes is becoming more and more extensive, the use of different environments, so now the requirements for galvanized steel pipes are becoming more and more stringent, and now the corrosion resistance of galvanized steel pipes have new requirements, because the current galvanized steel pipes on the brushing process requirements are also very strict.

　　1. Rust removal: This is an important process before the coating of galvanized steel pipes, components, etc. It is the key to the quality of galvanized steel pipes. Thorough rust removal can improve the adhesion of antirust paint and prolong the service life of galvanized steel pipe.

　　2. After sandblasting, shot blasting or pickling treatment, the surface of Large diameter Galvanized Steel Pipe, such as iron oxide scale and rust can be cleaned up, which improves the adhesion of the coating. When the installation site is unconditionally treated by sand blasting and shot blasting, manual mechanical rust removal can be adopted, but the quality of rust removal must be achieved.

　　3. When using sandblasting or manual mechanical rust removal, the surface metal of galvanized steel pipe is exposed directly in the air because of the oxide scale of galvanized steel pipe falling off. If a primer is not applied in time, the surface of galvanized steel pipe is easy to rust again, which affects the adhesion of paint film. As the paint is a time-sensitive material, inventory backlog is easy to expire, so the paint must be re-examined before use the main indicators, the results meet the standard before use.

How to deal with the leakage of weld neck flanges correctly?

The weld neck flange sealing treatment measures should be appropriate. According to previous experience, when the weld neck flange leakage problem is encountered, it is necessary to take into account the leakage location and condition of the weld neck flange bolts on both sides of the valve body of the DN150 body. Because the gap is very small, it is impossible to inject the sealant through the gap to eliminate the leakage. The leakage medium is steam, the leakage system temperature is 400~500 degrees, and the system pressure is 4MPA. Therefore, it is impossible to eliminate leakage by sealing the DIN 2527 PN16 Stainless Steel Weld Neck Flange.

　　Common sealing methods are:

　　Firstly, fixture design (1) fixture structure form to determine the containment leakage point, the establishment of valve body weld neck flange and pipe flange connection between the short flange sealing chamber. In order to prevent the potential leakage between the valve body and the weld neck flange from leaking again due to the compression, a circular cavity is set up to inject glue at the joint of the clamp and the weld neck flange outer edge of the valve body. (2) In the process of injection of different diameter weld neck flange, the clamp is apt to displace to the side of small diameter flange, so the limit measure of tooth-shaped contact clamping is adopted.

　　Secondly, sealant selection and dosage estimation (1) Sealant selection according to the leakage system temperature and leakage site characteristics, using TXY-18 A type sealant. The sealant has excellent heat resistance, medium resistance and injection process performance, is easy to establish a uniform and compact sealing structure, and the sealing can maintain long-term stability. (2) the use of sealant 4.5KG should be used for unilateral leakage.

How to ensure the sealing of the plate flange?

In real life, it is because of all kinds of products that we can provide a lot of convenience for our life. In addition, many industry development, also can not be separated from the related products, so now as a connection part, ASTM A182 F51 Forged Stainless Steel Plate Flange also began to appear in a lot of places, now people can understand and familiar products.

　　Plate flange can be said to be able to apply in a lot of industries and fields, like the decoration industry, in the construction industry, will be through such connected components to complete the related work. Plate flange can be said that now a lot of places, in the use of such products, the most important thing is the seal of the product now, do not know how the seal of such products is. In fact, many of the construction units now, in the use of this connection part, the most need to pay attention to is the seal, only good sealing, can play a role. In this case, we need to ensure that the model of the two products is the same, so that the connection can be completed, and plate flange to ensure that the specifications of the product are the same, otherwise, when the connection is carried out, it is very easy to have a bad sealing effect.

　　Now, as long as it is in use, plate flange is necessary to have a certain understanding of the specifications and models. Only after understanding, can complete the same specification, the same type of plate flange between the docking, thus can guarantee the seal between the products now, but also can ensure that the present product has been better used, in a large number of places will have their own sealing performance.

Socket flanges can be used in many industries and fields

Socket flanges can be used in many industries and fields, like the decoration industry, in the construction industry, through such connected components, to complete the related work. Socket flanges can be said that now a lot of places, in the use of such products, the most important thing is the seal of the product now, do not know how the seal of such products is.

　　In fact, many of the construction units now, in the use of this connection part, the most need to pay attention to is the seal, only good sealing, can play a role. In this case, we need to ensure that the model of the two products is the same, so that the connection can be completed, and that is to ensure that the specifications of the product are the same, otherwise, when the connection of DIN 2512 PN16 Stainless Steel Socket Flange is carried out, it is very easy to have a bad sealing effect.

　　Now, as long as it is in use, it is necessary to have a certain understanding of the specifications and models. Only after understanding, can complete the same specification, the same type of products between the docking, thus can guarantee the seal between the products now, but also can ensure that the present product has been better used, in a large number of socket flanges will have their own sealing performance.

Heat treatment process for threaded flanges

In the process of heat treatment of threaded flanges, annealing cooling speed is the slowest, normalizing cooling speed is faster, quenching cooling speed is faster. But there are different requirements for different grades of steel, such as air-hardened steel can be normalized as cooling rate for hardening. Threaded flanges are connected and uninterrupted. When the metal is heated, the threaded flanges pipe often oxidizes when the workpiece is exposed to the air. Decarburization (that is, the reduction of carbon content on the surface of iron and steel parts) has a negative effect on the surface properties of the parts after heat treatment. The metal parts of ANSI B16.47 Class 150-2500 Threaded Flanges should normally be controlled in atmospheres or protective atmospheres. Heating in molten salt and neutralized in vacuum can also be protected by coating or packaging.

Production process of alloy steel blind flange

　According to the size of the drawing, the theoretical weight of the alloy steel blind flange is calculated and analyzed carefully before the blind flange is manufactured. Finally, the following process is adopted

　　1. casting is the first process of alloy steel tube production.

　　ingredients: according to the needs of the production of specific alloy grades, calculate the addition of various alloy components, reasonable mix of various raw materials.

　　smelting: according to the technological requirements of alloy steel materials will be added to the smelting furnace melting, and through degassing, slag removal refining and other means to load the melt slag, gas effectively removed.

　　cast zirconium: alloy steel blind flange under certain casting conditions, through the deep well casting system, cooling cast into various specifications of round cast rods.

　　Extrusion: Extrusion is the means of forming profiles. First, according to the section design of profiles, ASME B16.5 Class 600lb Alloy Steel Blind Flange is manufactured, and the heated round cast rod is extruded from the mold by extrusion.

　　2coloring.

　　surface pretreatment: the use of chemical or physical methods to clean the surface of profiles, exposed pure matrix, in order to facilitate the acquisition of a complete, compact artificial oxide film. Mirrors or matte surfaces can also be obtained by mechanical means.

　　anodic oxidation: A dense, porous and strong adsorptive alloy steel blind flange was formed on the surface of the substrate by anodic oxidation of the surface pretreated profiles under certain technological conditions.

　　sealing: the pore of the porous oxide film formed by anodic oxidation is closed, so that the anti-pollution, corrosion resistance and wear resistance of the oxide film are enhanced. The oxide film is colorless and transparent. By using the strong adsorbability of the oxide film before sealing, some metal salts are adsorbed and deposited in the pores of the film.

Heat resistance of carbon steel weld neck flanges

High impact resistance: Because the carbon steel weld neck flanges unique impact strength function has been significantly improved compared with other solid-walled pipes, its ring stiffness is 1.3 times that of solid-walled pipes.

　　Long service life: under the rated service temperature and pressure, the service life of carbon steel weld neck flanges can reach more than 50 years, with anti-ultraviolet, anti-radiation, so that the product will never fade.

　　Good corrosion resistance: Except for a few hydrides, it can resist the corrosion of various chemical media. The ANSI B16.5 Class 600 Forged Carbon Steel Weld Neck Flanges has excellent acid resistance, alkali resistance, corrosion resistance, no rust, no corrosion, no bacteria, no electrochemical erosion.

　　Good thermal insulation: because the material of carbon steel weld neck flanges thermal conductivity is low, 20 degrees Celsius thermal conductivity is 0.21-0.24 W/mk, than steel pipes (43-52W/mk), purple steel pipes (333W/mk) much smaller, so PP-R pipe insulation is good.

Production technology of large caliber stainless steel Plate flange

Large diameter plate flange standards determine plate flange size, we must know the nominal diameter of flange and nominal pressure. The determination of nominal pressure of large caliber plate flange is related to the maximum operating pressure, operating temperature and flange material. Because the plate flange size series and flange thickness calculation are based on the mechanical properties of 20MnR at 250 C. Therefore, the maximum allowable operating pressure of the plate flange size determined on this basis is considered to be the nominal pressure of the plate flange with this size at 200 C.

　　There are many processing methods for large caliber plate flange. The processing methods are formulated according to different customers, and the processing methods should be adopted according to different materials. The production technology of large caliber plate flange is totally different from that of small caliber plate flange. Because of its super-large caliber, butting or splicing method is needed to process. Because of the different caliber of production, the processing method is also different. The processing method of DN900 Stainless Steel Large Plate Flange is to choose the way of processing by the size of the customer.

　　Plate flanges and butt welding flanges are common flanges for large flanges. Flat welded flange has poor rigidity, which is suitable for the occasion of pressure P < 4 MPa; butt welded flange is also called high neck flange, which is more rigid and suitable for the occasion of high pressure and temperature.

Steel cut wire are widely used in various industries

　1. mold industry: the mold is mostly forged, and the mold itself requires lubrication and finishing.

　　2. Valve production and processing industry: Valve factory workpieces are forged, the need for polishing and grinding, ability to clean, lubricate, flat.

　　3. shipbuilding industry: Steel Cut Wire for Shot Blasting Equipment used by shipyards have rust, which affects the quality of shipbuilding and needs finishing and polishing.

　　4. iron and steel manufacturing: steel cut wire produced by steel mills and burrs.

　　5. forging industry: forging parts produced by forging companies are burnished and polished.

　　6. car manufacturing industry: according to the operation request of the car manufacturing plant, the steel cut wire and some forged parts are used for polishing, but it can not damage the strength of the steel plate and the original shape. The shape of the forged parts should ensure the beautiful cleaning.

　　7. bearing manufacturing industry: bearing is restricted by mold, and impurities or burrs need to be polished.

　　8. steel structure construction company: the steel structure must be derudied before application, so as to arrive at the structural request of the state.

　　9. Hardware Factory, Electroplating Manufacturing Industry: Because both hardware factory and plating factory require workpiece surface cleaning, flat, lubrication, finishing and polishing. In summary, Steel cut wire are mainly used for rust removal, polishing, scale removal, heat treatment and other sand removal, surface strengthening treatment and so on.

How can steel pipe be corroded?

At present, the steel used for manufacturing large steel structure is basically made of hot rolled carbon steel and low carbon alloy high strength steel. On the surface of hot rolled steel, a layer of hard iron oxide layer, with ferrous oxide (black), is formed, and its thickness increases with the thickness of steel plate or profile. The main chemical compositions of the oxide scale are: ferrous oxide accounts for 40%-90% three, iron oxide takes up 3%-60%, and iron oxide content takes up 0%-10%. Generally, steel products are made into bridges, transmission towers or conditional cut wire shot structures in such a situation. If the steel structure is not treated at this time, some black ferrous oxide will produce white ferrous hydroxide with water, and the ferrous hydroxide will continue to develop to produce brown iron hydroxide. If the steel structure is not corroded at any time, the corrosion rate will be faster. The main composition of the rust produced later is iron oxide containing crystalline water, and corrosion pits will gradually appear on the surface of the steel. 　　The corroded steel pipe needs to be rusting with conditional cut wire shot. The steel pipe treated by the conditional cut wire shot will not be damaged by his life, so the Stainless Steel Conditioned Cut Wire Shot plays a great role in the field of rust removal.

Wide application of steel shot

First, high quality steel, wool and steel chips were melted. Then the molten steel was thrown into the water by centrifugal disc high-speed centrifugation. The surface temperature of the steel shot fell sharply to form the pellet, which was a quenching. After a quenching, the pellets were dried and reheated in the furnace to achieve the suitable hardness. The Carbon Steel Shot for Steel Pipes Surface Treatment after the tempering treatment were selected by mechanical sieve to form different grades of products conforming to the SAE standard to be used for the steel shot peening equipment.

　　Excellent heat treatment control technology gives the best elasticity and fatigue resistance of the steel shot, and the steel shot with different granularity and hardness are suitable for different processes, such as the shot peening which is widely used in large mass and heavy parts or materials.

　　Steel shot are widely used for deoxidizing and rusting of steel workpieces before painting. In this case, centrifugal shot blasting equipment is often used. The steel shot shape and the smaller hardness make the steel shot not wear much to the equipment.

　　Steel shot are also widely used in sand cleaning of castings.

　　When used with proper equipment, the steel shot is the best abrasive for surface cleaning because of its durability.

　　Applicable industrial scope

　　Aviation industry; automobile industry; sandblasted / spray lacquer; consumer goods manufacturing; container manufacturing / repair; casting;

　　Granite / stone cutting; shipbuilding and ship repair; oil and gas pipelines; factory maintenance and metalworking.

　　Applicable process range

　　Surface pretreatment, sand cleaning, pipeline descaling and strengthening before painting.

　　Moderate hardness, strong toughness, impact resistance, long service life, up to 2000-2900 times, good anti elasticity, quick cleaning speed, low consumption, no breakage, fast cleaning speed, good technical effect. The surface cleanliness of the metal surface treated by this product can reach GB/T8923-1989, the surface roughness is up to Rz=10--150 m, which increases the surface surface area of the metal surface, improves the surface adhesion of the coating, and has very remarkable economic benefit. It is the most advanced and ideal metal cleaning and strengthening metal at home and abroad. Abrasive derusting.

Cast Steel Grits are widely used

　1. mold industry: the mold is mostly forged, and the mold itself requires lubrication and finishing.

　　2. Valve production and processing industry: Valve factory workpieces are forged, the need for polishing and grinding, ability to clean, lubricate, flat.

　　3. shipbuilding industry: the steel plates used by shipyards have rust, which affects the quality of shipbuilding and needs finishing and polishing.

　　4. Cast Steel Grits manufacturing: SAE Cast Steel Grit produced by steel mills and burrs.

　　5. forging industry: forging parts produced by forging companies are burnished and polished.

　　6. Car Manufacturing Industry: According to the operation request of car manufacturer, the steel plate and some forgings used are required to be polished, but the strength and the original shape of the steel plate can not be damaged. The shape of the forgings should be cleaned beautifully.

　　7. bearing manufacturing industry: bearing is restricted by mold, and impurities or burrs need to be polished.

　　8. Cast Steel Grits structure construction company: steel structure must be rust removal before use, in order to reach the structural requirements set by the state.

　　9. Hardware Factory, Electroplating Manufacturing Industry: Because both hardware factory and plating factory require workpiece surface cleaning, flat, lubrication, finishing and polishing. In summary, Cast Steel Grits are mainly used for rust removal, polishing, scale removal, heat treatment and other sand removal, surface strengthening treatment and so on.

How to choose high quality cut wire shot

Determining the material of cut wire shot mainly depends on the type of workpiece you want to clean up. Aluminum cut wire shot or stainless steel cut wire shot are generally used for non-ferrous metals. Ordinary steel weldments, castings, steel and so on are used for cut wire shot; the larger the diameter of cut wire shot, the higher the surface roughness after cleaning up, but the work efficiency is also very high; irregular shape of steel grit or steel wire cutting. Pill cleaning efficiency is higher than spherical pellets, but the surface roughness is also higher; high cleaning efficiency of the pellets on equipment wear faster; only the use of time, but this wear is not faster than production efficiency; the hardness of steel pellets and cleaning speed is proportional to, but is inversely proportional to life.

　　Therefore, the higher the hardness of cut wire shot, the faster the cleaning speed, but the short life consumption is large, so moderate hardness (about HRC40-50 is appropriate) the use of the best results. The function of the cut wire shot is to clean up the workpiece. The choice of the steel shot is directly proportional to the work efficiency. The correct choice of the steel shot is the key to improve the work efficiency