The seamless steel pipe used for general use are rolled by ordinary carbon structural steel, low alloy structural steel or alloy structural steel, with the most output, which are mainly used as pipes or structural parts for conveying fluid. According to the use of different types of supply: a, according to chemical composition and mechanical performance supply; b, according to mechanical performance supply; c, according to water pressure test supply. Seamless steel pipe supplied by class A and B shall also be subjected to hydraulic pressure tests if they are used for liquid pressure. Seamless steel pipes for special purposes include seamless steel pipes for boilers, chemical and electric power, geological seamless steel pipes and petroleum seamless steel pipes.
DIN17175 Carbon Seamless Steel Pipe have hollow sections and are widely used as pipes for conveying fluids, such as oil, natural gas, gas, water and some solid materials. Compared with solid steel such as round steel, the seamless steel pipe has lighter weight and is an economic section steel at the same bending and torsion strength.
It is widely used in the manufacture of structural parts and mechanical parts, such as oil drilling rod, automobile drive shaft, bicycle frame, and steel scaffold used in construction. It can improve the utilization of material, simplify the manufacturing process, save materials and work, and have widely used steel tube to make it.
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