Alloy steel pipe is mainly used for high pressure and high temperature pipes and equipment in power plants, nuclear power plants, high pressure boilers, high-temperature superheaters and reheaters. It is made of high-quality carbon steel, alloy structural steel and stainless heat-resistant steel by hot rolling (extrusion, expansion) or cold rolling (drawing).
Alloy pipes with hollow section 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, alloy steel pipe is lighter when its bending and torsional strength is the same. Alloy steel pipe is a kind of steel with economic section, which is widely used to manufacture structural parts and mechanical parts, such as oil drill pipe, automobile transmission shaft, bicycle frame and steel scaffolding used in construction.
Manufacturing annular parts with alloy steel pipes can improve the utilization rate of materials, simplify the manufacturing process, and save materials and processing hours, such as rolling bearing rings, jack sleeves, etc. Currently, steel pipes are widely used for manufacturing. Alloy steel pipe is also an indispensable material for various conventional weapons. Gun barrel and barrel should be made of steel pipe. Alloy steel pipe can be divided into round pipe and special-shaped pipe according to different cross-sectional area shapes. Since the circle area is the largest under the condition of equal circumference, more fluid can be transported with circular tubes. In addition, when the ring section is subjected to internal or external radial pressure, the force is more uniform, so most steel pipes are round.
