1.Process Flow of Seamless Pipe
Process Flow of Sanitation Mirror Pipe:
Steel Rough--Physical and Chemical Inspection--Peeling—Inspection--Heating--Piercing—Pickling--Grinding--Lubricating and Air Drying--Welding Head--Cold Drawing--Solid and Fluid Treatment--Pickling--Acid Washing and Passivation--Inspection--Cold Rolling--Oil Clearing--End Cutting --Internal Polishing --External Polishing --Inspection--Marking--Product Packing
Process Flow of Industrial Pipe:
Steel Rough--Physical and Chemical Inspection--Peeling—Inspection--Heating—Piercing--Pickling--Grinding--Lubricating and Air Drying--Welding Head--Cold Drawing--Solid and Fluid Treatment--Pickling--Acid Washing and Passivation--Inspection
2. Process Flow of Welded Pipe:
Unwinding--Levelling--End Cutting and End Welding--Cage-type--Roll Forming--Welding--Cleaning--Precorrection--Induction Heat-Treatment--Sizing and Straightening--Eddy Current Testing--Cutting--Hydrostatic Testing--Pickling--Final Inspection--Packaging
