• Corporate vision to become the pipeline industry Toyota
  • Corporate mission to enhance the quality level of Chinese manufacturing
  • Business goals domestic industry first
pre insulated steel carbon steel pipe

pre insulated steel carbon steel pipe

  • Introduction:Hebei Haihao Group produce pre insulated/insulation steel,
  • API/LSAW/SSAW/3PE steel and other pipe fittings in high quality.
  • Email:sales@haihaogroup.com

Pipe is customarily identified by “Nominal Pipe Size” (NPS), with wall thickness defined by “Schedule number” (SCH). Tube is customarily specified by its outside diameter (O.D.) and wall thickness (WT), expressed either in Birmingham wire gage (BWG) or in thousandths of an inch.

Pipe:  NPS 1/2-SCH 40 is even to outside diameter 21,3 mm with a wall thickness of 2,77 mm.

Tube:  1/2″ x 1,5 is even to outside diameter 12,7 mm with a wall thickness of 1,5 mm.

Size OD 20-219mm
Wall Thickness 0.5mm-2.5mm

SCH30,SCH40,STD,XS,SCH80,SCH160,XXS etc.

Length Less Than 12m
Steel material All carbon steel, stainless steel, Alloy steel
Standard GB/T3091-1993,GB/T3092-1993,EN39,S355J2H,S275J2H,ST37,ST52,ASTM A106,ASTM A53

BS1387,API 5L

Ends 1) Plain

2) Beveled

3) Thread with Coupling or cap


End protector 1) Plastic pipe cap

2) Iron protector

Surface Treatment 1) Bared

2) Black Painted or other colors painted(varnish coating)

3) Galvanized

4) With Oiled

5) 3 PE, FBE, corrosion resistant coating

Technique Electronic Resistance Welded (ERW )

Electronic Fusion Welded (EFW)

Double Submerged Arc Welded (DSAW)

Inspection With Hydraulic Testing, Eddy Current , Infrared Test
Package 1) Bundle,

2) In Bulk

3) Bags

4) Clients’ Requirements

Delivery 1) Container

2) Bulk carrier

Payment L/C T/T Western Union
steel pipe products process
pre insulated steel carbon steel pipepre insulated steel carbon steel pipepre insulated steel carbon steel pipe