Production Process Flow of Steel 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.

　　We have adopted advanced production equipment and technologies to manufacture our spiral steel and erw pipe,which can not only improve product quality, but also save raw materials. Our products have high strength, good toughness and resistance to corrosion.