不锈钢无缝管的制造工艺1.热轧（挤压无缝钢管）：圆管坯→加热→穿孔→三

Stainless steel seamless pipe manufacturing process <br>1. The hot rolling (extrusion seamless steel pipe): round tube perforation → → heating → three-roll rolling, rolling or extrusion → detached → sizing (or reducing) → cooling → → straightening pressure test (or testing) → mark → storage <br>2. cold drawn (rolled) seamless steel pipe: round tube perforation → heating → → → annealing → pickling → Heading oiled (copper) → multi pass drawing (cold) → blank tube straightening → → heat treatment → water pressure test (testing) → mark → storage.

Manufacturing process for stainless steel seamless tubes<br>1. Hot-rolled (squeezing seamless steel pipe): round tube blanks, round tube blanks, heating, perforation, three-roll diagonal rolling, rolling or squeezing, de-tube, fixed diameter (or de-diameter) - Cooling, straightening, water pressure test (or detection) mark-in-stocking<br>2. Cold pull (rolled) seamless steel pipe: round tube blanks, round tube blanks, heating, perforation, head, annealing, acid washing, oil (copper plated) , multi-way cold pull (cold rolling) , blank tube, heat treatment, straightening, water pressure test (detecting) , marking, stocking.

Manufacturing process of stainless steel seamless pipe<br>1. Hot rolling (extrusion of seamless steel tube): round tube blank → heating → piercing → three roll cross rolling, continuous rolling or extrusion → pipe stripping → sizing (or reducing) → cooling → straightening → hydrostatic test (or flaw detection) → marking → warehousing<br>2. Cold drawing (rolling) seamless steel pipe: round tube blank → heating → piercing → heading → annealing → pickling → oiling (copper plating) → multi pass cold drawing (cold rolling) → blank tube → heat treatment → straightening → hydrostatic test (flaw detection) → marking → warehousing.<br>