Types and applications of seamless stainless steel tubes

　　Seamless steel pipe is widely used, and in order to cope with many use scenarios, the stainless steel material used in manufacturing seamless steel pipe is also very many. Now let's introduce it.

　　Seamless steel tube for structure

　　It is mainly used for manufacturing general structure and mechanical structure. Its representative material: #20 steel , #45 steel, Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.

　　Seamless Steel Pipe for Fluid Conveying

　　Mainly used for conveying water, oil, gas and other fluids of the general seamless pipe. The representative materials are #20, Q345, etc.

　　Seamless Tube for Low and Medium Pressure Boiler

　　It is used to manufacture superheated steam pipes, boiling pipes and superheated steam pipes, large smoke pipes, small smoke pipes and arch brick pipes for various structures of low and medium pressure boilers, hot-rolled and cold-drawn seamless pipes. The representative material is steel No. 10 and No. 20.

　　Seamless stainless steel tube for structure

　　It is a hot-rolled (extruded, expanded) and cold-drawn (rolled) seamless pipe made of stainless steel widely used in chemical, petroleum, textile, medical, food, machinery and other industries. Its representative materials are 0-3Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti, etc.

　　Stainless steel seamless steel pipe for fluid conveying

　　Hot rolled (extruded, expanded) and cold drawn (rolled) seamless tubes made of stainless steel for conveying fluids. The representative materials are 0Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr17Ni12Mo2, 0Cr18Ni12Mo2Ti, etc.

　　Special-shaped seamless steel tube

　　It is a general term for seamless tubes of other cross-section shapes except round seamless tubes. According to the shape and size of steel tube section, it can be divided into three types: special-shaped seamless pipe with equal wall thickness (code D), special-shaped seamless pipe with unequal wall thickness (code BD) and special-shaped seamless pipe with variable diameter (code BJ). Special-shaped seamless tubes are widely used in various structural parts, tools and mechanical parts. Compared with circular pipe, special-shaped pipe generally has larger inertia moment and section modulus, has greater flexural and torsional resistance, can greatly reduce the weight of the structure and save steel.

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