Manufacturing Tpes and Processes of Stainless Steel Pipe

　　Manufacturing types and processes of stainless steel pipe

　　1. Seamless Hot Rolling Processes

　　Round Pipe Billet → Heating → Perforation → Three Roll Skew Rolling, Continuous Rolling or Extrusion → Off Pipe → Sizing (Or Reducing Diameter)→ Cooling → Billet → Straightening → Water Pressure Test ( Or Flaw Detection) → Marking → Storage

　　2. Seamless Cold Rolling (Cold drawn) Processes

　　Round Pipe Billet → Heating → Perforation → Head → Annealing → Pickling → Oil (Copper) → Multi Pass Drawing (Cold Rolling) → Billet → Heat Treatment → Straightening → Water Pressure Test → Marking → Storage

　　3. Longitudinal welding (Straight seam welding) processes

　　Including ERW, EFW.

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