Method for identifying the authenticity of stainless steel elbows

 1. Magnetic test: Magnetic test is a simple method to distinguish between annealed austenitic stainless steel and ferritic stainless steel. Austenitic stainless steel is a non-magnetic steel, but it will have mild magnetism after cold working under high pressure; And pure chromium steel and low alloy steel are both strong magnetic steels.

　　2. Nitric acid point test: One obvious feature of stainless steel elbows is their inherent resistance to corrosion of concentrated and dilute nitric acid. This performance makes it easy to distinguish from most other metals or alloys. However, high carbon 420 and 440 steels are slightly corroded during the nitric acid point test, and non-ferrous metals immediately corrode when they encounter concentrated nitric acid. Dilute nitric acid has strong corrosiveness to carbon steel.

　　3. Sulfuric acid test: The sulfuric acid immersion stainless steel elbow test can distinguish 302 and 304 from 316 and 317. The cut edges of the sample should be finely ground, and then cleaned and passivated for half an hour in nitric acid (with a specific gravity of 1.42) with a volume concentration of 20-30% and a temperature of 60-66 ℃. The volume concentration of the sulfuric acid test solution is 10%, and it is heated to 71 ℃. When 302 and 304 steel are immersed in this hot solution, they are corroded and generate a large number of bubbles, causing the sample to turn black within a few minutes; The samples of 316 and 317 steel are not corroded or react slowly (without bubbles), and the samples do not change color within 10-15 minutes. If samples with known composition are tested simultaneously for approximate comparison, it can make the test more accurate.

　　4. Copper sulfate spot test: The copper sulfate spot test is a convenient method to quickly distinguish between ordinary carbon steel and all types of stainless steel. The concentration of the copper sulfate solution used is 5-10%. Before conducting point tests, the test area should be coated with grease or various impurities, and a small area should be polished with a soft abrasive cloth. Then, a copper sulfate solution should be dripped into the cleaned area using a drip bottle. Ordinary carbon steel or iron will form a layer of surface metal copper within a few seconds, while the surface of stainless steel will not produce copper precipitation or display the color of copper.

Requirements for storage environment of seamless stainless steel pipes

 Seamless stainless steel pipes have certain requirements for their storage environment. If stored improperly, they may undergo oxidation and corrosion. After purchasing seamless stainless steel pipes, if not immediately used, customers will face storage issues. In order to ensure the quality of seamless stainless steel pipes for stainless steel welding, let me share with you below

　　When storing, use a stick to separate the seamless stainless steel pipe from the ground to avoid scratching the pipe body.

　　2. Seamless stainless steel pipes should pay attention to moisture, dust, oil, lubricating oil, etc. to avoid long-term storage in this environment, which can easily cause surface corrosion or other performance degradation.

　　3. Seamless stainless steel pipes should be stored in a clean and dry place to facilitate ventilation and easy disassembly under the original packaging conditions.

　　4. The film of seamless stainless steel pipes must avoid direct light. Replace immediately after storage (the film has a lifespan of 6 months).

　　5. If the packaging material is soaked during paper filling, please immediately remove the liner to avoid corrosion of the surface.

Classification of stainless steel elbows

 In the project, the stainless steel elbow is used to connect two pipes with the same or different nominal diameters to make the pipeline turn at an angle. Let's briefly introduce the classification of stainless steel elbows by the manufacturer of stainless steel elbows.

　　Classification of stainless steel elbows: According to angle, commonly used ones include 45 degrees and 90 degrees; And 180 degrees; Three types, in addition to 60 degrees according to engineering needs; Other abnormal angle elbows.

　　When we operate and use stainless steel elbows, the types of stainless steel elbows are mentioned above. We should all understand these types of stainless steel elbows, and the correct method of operating and using stainless steel elbows is what we all need.

　　Stainless steel elbows are formed by stamping a sheet metal of the same material as the pipe material into a half circular elbow using a stamping die, and the two half circular elbows are assembled and welded into shape.

What is the production process for stainless steel tees?

 　Stainless steel tees can be divided into equal diameter and reduced diameter, and the nozzle ends of equal diameter tees are of the same size; The main pipe connection size of the reducing tee is the same. So, do you know what the production process for stainless steel tees is?

　　1. Extruded stainless steel tees: The usual production processes include hydraulic bulging and hot pressing forming, both of which produce designed tees by subjecting the steel pipe section to plastic deformation according to the tee mold without damaging the metal structure.

　　2. Welded stainless steel tee: It is welded from multiple steel parts, and this type of stainless steel tee can be divided into three types: elbow type, right angle type, and flat welded joint. Their appearance and shape are different, but the welding process is basically the same, except that the shape of the welded steel parts is different.

　　There are two main types of stainless steel tees: welded stainless steel tees and extruded stainless steel tees. There are fundamental differences in the production processes of these two types of stainless steel tees.

How can seamless stainless steel pipes be applied in high-temperature and high-pressure environments?

 In fields such as petroleum, chemical, and power, pipeline installation in high-temperature and high-pressure environments is crucial. In this environment, stainless steel seamless pipes have become the best choice.

　　1. Application conditions under high temperature and pressure

　　In high-temperature and high-pressure environments, conventional steel pipes are often difficult to use due to the effects of temperature and pressure. Due to the molecular grain boundary fracture of conventional steel pipes, while stainless steel seamless pipes adopt a more dense and uniform crystal structure, they have superior performance in high-temperature and high-pressure environments.

　　2. Characteristics of stainless steel seamless pipes

　　The characteristic of stainless steel seamless pipe is its uniform and dense internal structure, which is seamless and not easily deformed, and the processing process is relatively convenient. Due to the strong corrosion resistance of stainless steel, it will not rust even after long-term exposure to an oxidizing atmosphere, ensuring the long-term use of the pipeline.

　　At the same time, stainless steel seamless pipes have strong corrosion resistance and can maintain long-term stability even in corrosive environments of strong acids, alkalis, and even seawater. Its material is more durable and can withstand vibration and impact in high-temperature and high-pressure environments, without causing damage, leakage, and other problems.

　　3. Application scope

　　In addition to being used in industries such as petroleum and chemical, stainless steel seamless pipes are also widely used in medical devices, precision instruments and devices, high-end building decoration, and other fields. With the implementation of Made in China 2025 Plan, more and more industries begin to use stainless steel seamless tubes to improve the quality and reliability of domestic products.

　　In summary, stainless steel seamless pipes have fully demonstrated their outstanding advantages in high-temperature and high-pressure environments. Precision manufacturing and excellent performance ensure its stable operation in even harsher environments, providing reliable and long-lasting solutions for various industries.

What are the pre welding preparations for stainless steel flanges

 1. Clean up the oil and other dirt on the stainless steel corrugated pipes and flange pipes that are about to be welded. If the leakage is caused by cracking at the welding joint, the original welding scar should be removed, and the straight pipe of the flange pipe should be polished with a metallic luster. The straight pipe of the corrugated pipe is too thin to be ground or polished. Use a hand sandcloth to polish it.

　　2. Welding assembly: The optimal assembly gap is 0, because there are processing and manufacturing errors with large time and space gaps, which can easily burn through during welding. The treatment method can be to overlay a layer (usually 3-5mm) on the straight pipe of the flange pipe, and machine it to a gap of 0-0.05mm or polish it with craftsmanship. If it cannot be fitted, the outer diameter of the flange pipe should be reduced or ground until it is suitable.

　　3. Welding machine selection: WS315 type, with DC positive connection.

　　4. Welding material selection: ER308, Ø 0.8mm

Is the 304 stainless steel pipe treated with wire drawing still rustproof?

 Stainless steel pipes are corrosion-resistant steel grades, mainly composed of elements such as iron, carbon, nickel, and chromium. Chromium will form a layer of high chromium protective film on the surface of stainless steel pipes to prevent further oxidation and corrosion of the pipes. After wire drawing treatment, the chromium rich protective film on the surface of 304 stainless steel pipe is damaged, resulting in a decrease in its corrosion resistance and susceptibility to rusting.

　　The common surface treatments for stainless steel pipes are divided into bright and matte surfaces. The brushed matte surface is more wear-resistant than ordinary bright stainless steel, and looks more upscale, which is deeply loved by the public. Although 304 stainless steel pipes have been brushed, their rust prevention effect is still good, but their performance is indeed reduced compared to ordinary bright pipes.

　　Although 304 stainless steel pipes have certain corrosion resistance and rust resistance after wire drawing treatment, they should not be used in outdoor exposed areas as much as possible. If used indoors, it is not only aesthetically pleasing, but also sufficient for rust prevention in indoor environments. If placed outdoors, attention should be paid to maintenance. Regularly apply rust preventive oil to stainless steel pipes and be careful not to damage the surface of the pipes.

Basic shape of stainless steel flanges

 A flange is also known as a flange or flange. A flange is a component that connects pipes to each other and is connected to the end of the pipe. There are holes on the flange, and bolts make the two flanges tightly connected. The flanges are sealed with gaskets, and the flanges are divided into threaded (threaded) flanges and welded flanges.

　　The basic shape of a stainless steel flange is the same as a flat welded flange with a neck, that is, there is a socket hole on the inner hole of the flange, the pipe is inserted into the socket hole and welded, and a weld seam is welded on the back of the flange. Due to the gap between the socket stainless steel flange and the groove, corrosion is prone to occur. If another weld is welded inside, this corrosion can be avoided. The fatigue strength of socket flanges welded on both sides is 5% greater than that of welded flat flanges, while the static strength is the same. The inner diameter of the socket flange must be consistent with the inner diameter of the pipe. Socket flanges are only suitable for pipes with a nominal diameter of 150 or less. The commonly used materials for socket stainless steel flanges include: 201 304 316 304L 316.

　　Welded threaded stainless steel flanges are forged and can also be formed by threaded connections or welding. It consists of a pair of threaded flanges, a gasket, and several bolts and nuts. The gasket is placed between two flange sealing surfaces, and after tightening the nut, the specific pressure on the gasket surface reaches a certain value, causing deformation. The uneven areas on the sealing surface are filled to ensure a tight connection without leakage. Some pipe fittings and equipment already come with their own flanges, which also belong to flange connections. Flange connection is an important connection method in pipeline construction.

　　The threaded stainless steel flange connection is convenient to use and can withstand large pressures. In industrial pipelines, flange connections are widely used. Simply put, the function of welding socket stainless steel flanges is to fix and seal the connection of pipe fittings. Stainless steel threaded flanges are used to connect pipelines and maintain their sealing performance, facilitating the replacement of a certain section of pipeline, dismantling and inspecting the condition of the pipeline, and facilitating the sealing of a certain section of pipeline.

Production and Forming Process of Stainless Steel Elbows

 When the direction of the stainless steel pipe needs to be changed during the layout process of the fixture, it needs to be connected using stainless steel elbows with angles of 45 º, 90 º, etc.

　　The commonly used method for forming stainless steel elbows is the push bending forming process.

　　Push bending is a commonly used bending method for stainless steel pipe fittings, mainly used for bending elbows. According to the characteristics of the process, it can be divided into cold push bending and core rod hot push bending.

　　1. Cold push bending

　　The process of using a bending device to push a bent pipe blank on a regular hydraulic press or crank press is to press the stainless steel straight pipe blank into a mold with a bending cavity at room temperature, thereby forming a stainless steel elbow.

　　Cold pushed elbows are suitable for stainless steel elbows with small bending radii, with a relative bending radius r/d ≈ 1.3, a small ovality of the elbow section (≤ 3% -5%), and a small thinning of the outer pipe wall (≤ 9%), which can be bent; The elbow pushing bending device has a simple structure, does not require special equipment, and has high productivity. However, the relative thickness t/d of stainless steel pipes is generally required to be ≥ 0.06. Otherwise, the pipe blank often loses stability due to poor stiffness, leading to wrinkling or twisting on the inside of the elbow.

　　2. Hot push bending of core rod

　　The core rod type hot push elbow is pushed through an ox angle core rod under axial thrust on a pushing machine, heating while pushing, causing circumferential expansion and axial bending deformation of the pipe blank, thereby pushing the smaller diameter pipe blank into a larger diameter elbow.

Method of increasing the heat resistance of stainless steel flanges

 1. A higher chromium content is required to ensure antioxidant properties and form a dense oxide film. The mass fractions of chromium that can maintain thermal stability at 800 ° C, 1000 ° C, and 1100 ° C are 10% -12%, 22%, and 30%, respectively. The higher the Cr content, the stronger the antioxidant activity. Adding alloy elements such as Al and Si to steel helps to enhance the influence of Cr. The surface of steel forms an oxide film with a dense structure that firmly binds to the surface of the steel, such as alloy oxide films such as Cr2O3, Al2O3, and SiO2. The oxide film of this alloy has a good protective effect, which can extend the service life of the steel or increase the service temperature. In stainless steel flanges, if the oxide film is mainly in the form of (FeCr) 2O3, its ability to resist sudden changes in oxidation temperature is most outstanding.

　　2. Measure a to ensure thermal strength requirements. Add Ni to obtain stable austenite structure, and use Mo and W solid solution strengthening to increase the bonding force between atoms. However, the addition of Mo is not conducive to antioxidant activity. B. To form a second phase mainly composed of carbides (MC, MC6), the carbon content should be appropriately increased. C. Add trace amounts of boron or rare earth to control grain size and enhance grain boundaries, such as heat-resistant austenitic stainless steel flange 0Cr15Ni25Ti2 MOAIVE.

　　3. High temperature embrittlement problem. Heat resistant stainless steel can undergo various embrittlement phenomena during high-temperature hot working or long-term operation, such as the tempering embrittlement of MoCr13 steel at around 550 ℃, the growth of high chromium ferrite steel, and the embrittlement of austenitic steel. The precipitation of grain boundary carbides at 475 ℃ and the embrittlement caused by the brittleness of ferrite steel, and the embrittlement near 850 ℃ σ Phase precipitation brittleness, even in high CrNi austenitic steel σ The problem of phase precipitation brittleness. When using heat-resistant steel at high temperatures, consideration should be given to the possibility of embrittlement and high-temperature fatigue failure during long-term high-temperature operation. Fatigue failure is usually caused by the formation of surface cracks or certain defects below the surface. Under the action of alternating loads, cracks gradually propagate until they rupture.

ASME B16.5 Stainless Steel Pipe Fitting 304L Elbow

 

ASME B16.5 Stainless Steel Pipe Fitting 304L Elbow

Product Description

 

Categories	1. As per process: butt-welding fittings(seamless and welded), socket-welding fittings, threaded fittings 2. As per name: elbow, bend, reducer, tee, flange, cap, coupling, union, plug, bushing, nipple olet etc.
Material	1. Carbon steel: 20#, Q235B, ASTM A234 WPB, WPC, ASTM A860 WPHY42, WPHY46, WPHY52, WPHY60, WPHY65, WPHY70, ASTM A420 WPL3, WPL6 etc. 2. Alloy steel: 15CrMo, 12Cr1MoV, ASTM A234 WP12, WP11, WP22, WP5, WP9, WP91 etc. 3. Stainless steel: ASTM A403 WP304304L, WP316/316L, WP321, WP347, WP310S etc. 4. Forged steel: ASTM A105, ASTM A182 F5, F9, F91, F92, F11, F22, F304, F316L, F321, F310 ASTM A350LF2, LF3etc.
Size	Outer Diameter: DN15-DN2000(1/2"-80"); Thickness: 2-100mm(SCH5S-SCHXXS)
Standard	GB/T 12459, GB/T 13401, ASME B16.9, ASME b16.5, ASME B16.11, ASME B16.47, EN10253, EN1092 etc.
Surface	Antirust paint, antirust oil, acid pickling, polish, galvanizing etc.
Packing	Wooven bag, wooden case, wooden pallet etc.
Delivery	stock, 5-30days to China seaport
Payment	T/T, D/P, L/C at sight, Usance L/C etc.

 

 

ELBOW	45 ELBOW
	90 ELBOW
	STREET ELBOW
TEE	EUQAL TEE
	REDCUING TEE
UINON	UNION CONICAL FF
	UNION CONE FF
PLUG	HEX PLUG
	SQUARE PLUG
NIPPLE	HEX NIPPLE
	REDUCING NIPPLE
	STRAIGHT NIPPLE
	REDUCING OUTLET NIPPLE
COUPLING	COUPLING
	HALF COUPLING
CAPS	ROUND CAPS
	HEX CAP
OUTLET	BUTT-WELDING OUTLET
	SOCKET WELDING OUTLET
	THREAD OUTLET

 

 

Company Info.

 

 

 

　　Established in 1989, Hebei Shengtian Pipe-Fitting Group Co., Ltd. located in Mengcun County Hebei Province China, covering a land area of 100,000 square meters, with a workshop of 25,000 square meters and registered capital of 110 million RMB. Our company has a strong staff team. There are over 360 employees, including over 30 professionals and technicians.

　　We are capable of manufacturing various pipe fittings. Our main products scope: steel elbow, tees, bends, reducers, caps, forged flanges and sockets. We have been in this line for over 20 years. Our products are exported to many countries and regions, such as Southeast Asia, the Middle East, Europe and America etc. Our pipes and pipe fittings enjoy a good reputation in domestic and foreign markets. Every year, hundreds of foreign visitors and innumerable domestic visitors come to our company for business cooperation.

　　We have first-class inspection devices, perfect detecting means and well-trained specialists. And we stick to ISO9000:2000 quality system and efficiently control procedure in production. We have confidence that we can supply the best quality products. We would like to take responsibility for any quality uncertainty. Even so, our price is competitive. Besides, we can provide the best service to you.

　　In order to avoid the policy of the anti-dumping duties imposed on pipe & fittings from the Europe, United States and other countries, We can re-export through other countries like Malaysia, etc, to circumvent the anti-dumping duties, which could make you to win more competitive price.

　　Our products are in compliance with many international standards

　　Pipe Standard: ASTM A53,A106,API 5L,ASME B36.10M---1996.

　　Pipe-Fittings Standard: ANSI B16.9/16.28,DIN 2605 / 2616,JIS P2311 / 2312,GOST.

　　Flange Standard: ANSI B16.5,DIN Series,JIS Series,GOST Series.

90 Degree Short Radius Stainless Steel Forged Schedule40 Pipe Fittings Butt Weld Elbow

 

90 Degree Short Radius Stainless Steel Forged Schedule40 Pipe Fittings Butt Weld Elbow

Product Description

 

 

ASME B16.9	Long Radius Elbows,Long Radius Reducing Elbows,Long Radius Returns,Short Radius Elbows,Short Radius 180° Rerurns,3D Elbows,Straight Tees,Straight Crosses,Reducing Outlet Tees,Reducing Outlet Crosses,Lap Joint Stub Ends,Caps,Reducers	Size:1/2"-48" Wall Thickness:SCH5S-SCHXXS
ASME B16.28	Short Radius Elbows,Short Radius 180° Returns	Size:1/2"-24" Wall Thickness:SCH5S-SCHXXS
ASME B16.49	30° 45° 60° 90° Long Radius Short Radius Bend	Size:1/8"-12" Wall Thickness:SCH5S-SCHXXS
MSS-SP43	Long Radius Elbows,Straight and Reducing-on-the-Outlet Tees,Lap Joint Stub Ends,Caps,Long Radius 180° Returns,Concentric Reducers,Eccentric Reducers	Size:1/2"-24" Wall Thickness:SCH5S-SCHXXS
MSS-SP75	Long Radius Elbows,3R Elbows,Straight Tees,Reducing Outlet Tees,Caps,Reducers	Size:16"-60" Wall Thickness:SCH5S-SCHXXS
ISO, DIN, JIS	All Kind of Buttwelding Products or As Per Client's Drawing	As the Client's Demand
Material Standard	Nickel Alloy	ASTM/ASME SB 366 Alloy 200/UNS N02200, Alloy 800HT/Incoloy 800HT/UNS N08811, Alloy 400/Monel 400/UNS N04400,Alloy 800/Incoloy 800/UNS N08800, Alloy C-2000/UNS N06200, Alloy 925/Incoloy 925/UNS N09925, Alloy C-22/UNS N06022, Alloy 201/UNS N02201, Alloy C-276/Hastelloy C-276/UNS N10276, Alloy 625/UNS N06625, Nimonic 80A/Nickel Alloy 80A/UNS N07080, Alloy K-500/Monel K-500, Alloy 20/UNS N08020, Alloy 800H/Incoloy 800H/UNS N08810,Alloy 600/Inconel 600/UNS N06600, Alloy 31/UNS N08031,Alloy 825/Incoloy 825/UNS N08825
	Carbon Steel	ASTM/ASME SA 234 WPB
	Low Alloy Steel	ASTM/ASME SA 234 WP91, WP11, WP22, WP9,
	Low Temp Carbon steel	ASTM/ASME SA420 WPL3-WPL 6
	Duplex and Super Duplex Steel	ASTM/ASME SA 815 WPS31803, WPS32205, WPS32750, WPS32760, WPS32550
	Stainless Steel	ASTM/ASME SA403 WP 304, WP 304L, WP 304H, WP 304LN, WP 304N, ASTM/ASME A403 WP 316, WP 316L, WP 316H, WP 316LN, WP 316N, WP 316Ti, ASTM/ASME A403 WP 321, WP 321H ASTM/ASME A403 WP 347, WP 347H, WP 904L
	High Strength Ferritic Steel	ASTM/ASME SA 860 WPHY 42, WPHY 46, WPHY 52, WPHY 60, WPHY 65, WPHY 70
	Titanium	ASTM/ASME SB337 Grade 1, Grade 2, Grade 11, Grade 12
	Cu Ni Alloy	ASTM/ASME SB 466 UNS C70600 Cu/Ni 90/10

 

 

Company Info.

 

 

 

　　Established in 1989, Hebei Shengtian Pipe-Fitting Group Co., Ltd. located in Mengcun County Hebei Province China, covering a land area of 100,000 square meters, with a workshop of 25,000 square meters and registered capital of 110 million RMB. Our company has a strong staff team. There are over 360 employees, including over 30 professionals and technicians.

　　We are capable of manufacturing various pipe fittings. Our main products scope: steel elbow, tees, bends, reducers, caps, forged flanges and sockets. We have been in this line for over 20 years. Our products are exported to many countries and regions, such as Southeast Asia, the Middle East, Europe and America etc. Our pipes and pipe fittings enjoy a good reputation in domestic and foreign markets. Every year, hundreds of foreign visitors and innumerable domestic visitors come to our company for business cooperation.

　　We have first-class inspection devices, perfect detecting means and well-trained specialists. And we stick to ISO9000:2000 quality system and efficiently control procedure in production. We have confidence that we can supply the best quality products. We would like to take responsibility for any quality uncertainty. Even so, our price is competitive. Besides, we can provide the best service to you.

　　In order to avoid the policy of the anti-dumping duties imposed on pipe & fittings from the Europe, United States and other countries, We can re-export through other countries like Malaysia, etc, to circumvent the anti-dumping duties, which could make you to win more competitive price.

　　Our products are in compliance with many international standards

　　Pipe Standard: ASTM A53,A106,API 5L,ASME B36.10M---1996.

　　Pipe-Fittings Standard: ANSI B16.9/16.28,DIN 2605 / 2616,JIS P2311 / 2312,GOST.

　　Flange Standard: ANSI B16.5,DIN Series,JIS Series,GOST Series.

 

Product Display

 

Send your message to us:sale@stpipefitting.cn

Stainless Steel Buttweld Long Radius 2 45 Degree Elbow

 

Stainless Steel Buttweld Long Radius 2 45 Degree Elbow

Description
 

Material:	Stainless Steel	Angle:	45 Degree
Color:	Silver	Connection:	Weld
Type:	Elbow	Size:	1/8“-24”
Standard:	ASME,AISI,JIS,DIN	Shape:	Round
High Light:	long radius 2 45 degree elbow buttweld 2 45 degree elbow 2 45 degree stainless elbow

 
2 Inch 45 Degree Stainless Steel Butt Weld Long Radius Pipe Fitting Elbow
 
　　Butt weld elbow is a steel elbow formed by hot pressing or forging. Its connection form is to directly weld the elbow and steel pipe. Butt welded elbows have beveled ends to allow for ease of welding. This bevel allows for full penetration weld in most of the cases. Butt welded elbows are mainly used for elbow with higher pressure and temperature.
 

Pipe Fitting Elbow Specification
 

Standards:	ANSI – B 16.9 ASTM A403 – ASME SA403 – ‘Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings’ API 590-605 ASME B16.9 – ‘Factory-Made Wrought Buttwelding Fittings” ASME B16.25 – ‘Buttwelding Ends’ ASME B16.28 – ‘Wrought Steel Buttwelding Short Radius Elbows and Returns’ MSS SP-43 – ‘Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications’
Schedule:	Sch 5 TO Sch XXS.
Size:	Diameters – from 21,3 to 711 mm. Wall Thickness – from 2 to 40 mm.
Materials:	Monel, Nickel, Inconel, Hastalloy, Titanium, Tantalum, Stainless Steel, Alloy Steel, Carbon Steel, Cupro-Nickel 90/10 & 70/30 Stainless Steel ASME / ASTM SA / A403 SA / A 774 WP-S, WP-W, WP-WX, 304, 304L, 316, 316L, 304/304L, 316/316L, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404
Type:	Butt Weld (BW)
Thickness:	Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc.
Dimension:	ANSI B16.9, ANSI B16.28, MSS-SP-43 Type A, MSS-SP-43 Type B, JIS B2312, JIS B2313

 
Pipe Fitting Elbow Tolerances
 

For all fittings				Elbows 90/45 deg	180° Returns
Nominal Pipe Size(NPS)	Outside Ø at Bevel	Inside Ø at End	Wall Thickness t / t1	Center to End Dim. A-B-C-M	Center to Center Dim. O	Back to Face Dim. K	Alignment of Ends U
1/2 a 2 1/2	1	0,8	Not	2	7	7	1
3 a 3 1/2	1	1,6	less	2	7	7	1
4	+2 -1	1,6	than	2	7	7	1
5 a 6	+3 -1	1,6	87,50%	2	7	7	1
8	2	1,6	of nominal	2	7	7	1
10	+4 -3	3,2	tickness	2	7	7	2
12 a 18	+4 -3	3,2		3	10	7	2
20 a 24	+6 -5	4,8		3	10	7	2
26 a 30	+7 -5	4,8		3	…..	…..	…..
32 a 48	+7 -5	4,8		5	…..	…..	…..

 

Welcome to Shengtian

 

　　Pipe fittings elbow are widely used in petroleum, chemical industry, machinery, electric power, ship building, paper making etc. We produce all kinds of pipe fitting elbow including Carbon Steel A234wpb elbow,Butt Welding pipe fitting elbow,Lr Pipe Fitting Elbow etc. Meanwhile, the sizes ranges from 1/2' to 75' or designed by customters' demand.

　　With the fierce competition, we introduce the advanced equipment like Spectral detector, hydro press, pushing machines and 6000T press for raising production efficiency. To guarantee the quality, products are produced by a series of strict producers containing cutting, heat treatment, reforming, surface treatment, bevelling, final inspecting and others necessarily according to ISO9001: 2000 quality management system standards.

　　Therefore, the superior commodities exported to many countries and regions in Southeast Asia, the Middle East, Europe and America have reached 99.8% customer satisfaction. What's more, we have sufficient goods with various specifications in stock to meet clients' demand as our warehouse covers 3500 square meters. So as to establish long-term win-win cooperation with our customers, we will insist to offer products with lower price and higher quality by updating technologies and facilities.

　　We sincerely look forward to cooperating with you!