Thick wall welded pipe manufacturing process
The manufacturing process of thick-walled welded pipe production can be divided into three basic methods: cold drawing, cold rolling and hot rolling. The material of steel pipe is 10#, 20#, 35#, 45# is called ordinary steel pipe, 16Mn is called low alloy steel pipes, and the steel pipes are made of 27SiMn, 12Cr1MoV, 10CrMo910, 15CrMo, 35CrMo and stainless steel pipes, which are collectively referred to as alloy steel pipes. According to the use, it is divided into structural seamless steel pipe, seamless steel pipe for transportation, seamless steel pipe for boiler, high-pressure seamless steel pipe for boiler; high-pressure seamless steel pipe for fertilizer equipment, seamless steel pipe for geological brick exploration, Seam steel pipe, seamless steel pipe for petroleum cracking, seamless steel pipe for ships, cold drawn cold-rolled precision seamless steel pipe, various alloy pipes. The API seamless steel pipe is expressed by the method of outer diameter, wall thickness and ...