The manufacturing process of production can be divided into three basic methods: cold drawing, cold rolling and hot rolling. The material of the steel pipe is 10#, 20#, 35#, 45# and is called ordinary steel pipe. 16Mn is between ordinary steel pipe and alloy steel pipe. It is called low-alloy steel pipe, the material of steel pipe is 27SiMn, 12Cr1MoV, 10CrMo910, 15CrMo, 35CrMo and stainless steel pipe are collectively called alloy steel pipe.
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