Structural steel pipe production plant

Compared with GB/T8162-2008, the main changes of this standard are as follows: Structural steel pipes, this standard applies to general structural and mechanical structural steel pipes, and the fluid steel pipe standard applies to general seamless steel pipes that convey fluids. The main difference between it and structural steel pipes is that the fluid seamless steel pipes are subjected to hydraulic tests or ultrasonic, eddy current, and magnetic flux leakage testing. Therefore, in the standard selection of pressure pipe steel pipes, fluid steel pipes should not be used. Structural steel pipes are represented by outer diameter and wall thickness. Thick-walled seamless steel pipes are mainly used for machining, coal mining, hydraulic steel, and many other purposes. The material of thick-walled seamless steel pipe is divided into 10#, 20#, 35#, 45# 16Mn, 27SiMn, 12Cr1MoV, 10CrMo910, 15CrMo, 35CrMo, etc. Steel pipe classification-hot-rolled thick-walled seamless steel pipe, cold-rolled thick-walled seamless steel pipe, cold-drawn seamless steel pipe, extruded seamless steel pipe, top pipe. Structural stainless steel seamless steel pipe (GB/T14975-1994) is a hot-rolled (extruded, extruded, hot-rolled stainless steel made of corrosion-resistant pipes and structural parts and parts widely used in chemical, petroleum, textile, medical, food, machinery and other industries). Expand) and cold drawn (rolled) seamless steel tubes.