Seamless Steel Pipe

According to different manufacturing(mfg), seamless steel pipe can be divided into hot rolled pipe, cold rolled pipe, cold drawn pipe and extruded pipe.

Hot Rolled Process for Seamless Steel Pipe

Round Pipe Billet Heating Punching Three-Roller Skew Rolling, Continuous Rolling or Extruding Pipe Detaching  


Micro Tension Sizing or Reducing Cooling Straightening Hydrostatic Test or Inspection Marking Warehousing


Cold Drawn Process for Seamless Steel Pipe

Round Pipe Billet Heating Punching Pipe Head Treatment Annealing Acid Pickling Coating Oil Multi-pass

Cold Drawing Pipe Billet Heat Treatment Straightening Hydrostatic Test or Inspection Marking Warehousing







Copyright© Changsha Hunan Steel Co.,LTD. All Rights Reserved ţICP2023016352-1