Mechanical Properties Of Gas LSAW Steel Pipes

A Gas LSAW Steel Pipes made of a single piece of metal with no seams on its surface is called a seamless steel pipe. According to the production method, the seamless pipe is divided into a hot rolled pipe, a cold rolled pipe, a cold drawn pipe, an extruded pipe, a top pipe, and the like. According to the shape of the section, the seamless steel tube is divided into two types: a circular shape and a special shape. The shaped tube has a plurality of complicated shapes such as a square shape, an elliptical shape, a triangular shape, a hexagonal shape, a melon shape, a star shape, and a winged tube. The maximum diameter is 650mm and the minimum diameter is 0.3mm. Depending on the application, there are thick-walled tubes and thin-walled tubes. SHS RHS SMLS are mainly used for petroleum geological drilling pipes, cracking pipes for petrochemicals, boiler tubes, bearing tubes, and high-precision structural steel tubes for automobiles, tractors, and aviation.

Jointless steel pipe along the perimeter of its cross section. According to different production methods, it is divided into hot-rolled pipe, cold-rolled pipe, cold-drawn pipe, extruded pipe, and top pipe, etc., each with its own process regulations. The material is ordinary and high-quality carbon structural steel (Q215-A～Q275-A and 10～50 steel), low alloy steel (09MnV, 16Mn, etc.), alloy steel, stainless acid-resistant steel, etc. According to the purpose, it can be divided into general purpose (for water, gas pipeline and structural parts, mechanical parts) and special (for boiler, geological exploration, bearing, acid resistance, etc.).