According to the production method, it can be divided into seamless round pipes and welded round pipes.
Seamless steel pipe manufacturing process
Tube blank - inspection - peeling - inspection - heating - perforation - pickling - grinding - lubrication and air drying - welding head - cold drawing - solution treatment - pickling - pickling Passivation - Inspection
Welded steel pipe manufacturing process
Strip - Inspection - Shearing - Length - Qualitative - Welding - Flattening (Seamless) - Length - Inspection
