WELDER PIPES

ERW STEEL PIPE & ERW CASING

GB3087-1999, ASTM A179, ASTM A106, JIS G3454, SA-213, SA-179

Size:

OD (Out Diameter) 21.3-660mm

WT (Wall Thickness) 1.0-20mm or sch5, sch10, sch40, sch80, st, xs

Standard

For ERW pipe:

  • ASTM A53 B, A106, ASTM A178, ASTM A252
  • API 5L X42/46/52/56/60/70
  • ASTM A500, ASTM A513
  • EN 10204/10217 S235JR,S275JR, S355,S355JR,S355J2H

For EFW pipe

  • Carbon steel EFWpipe: ASTM A671,ASTM A672
  • Alloy steel EFW pipe: ASTM A691

Coating:

  • 3PE Coating  
  • 3PP Coating
  • FBE Coating
  • Epoxy Coating
  • Special Painting

Uses:

  • For ERW Line Pipe
  • For ERW Casing
  • For ERW Structure Tube
  • For High pressure and high temperature

LSAW STEEL PIPE

Straight seam welded steel pipe(LSAW steel pipe), Double-sided submerged arc welding steel pipe(ISAW steel pipe), longitudinal submerged arc welded steel pipe, high frequency straight seam welded pipe

Grades of LSAW Steel Pipe:

For pipeline:

  • API 5L GR.B, X42, X45, X50, X60, X60, X65, X70, X80

For piles:

  • ASTM A252

Tolerance of Outside Diameter and Wall Thickness of LSAW Steel Pipe

tolarance lsaw
lsaw pipe

SSAW STEEL PIPE

Spiral steel pipe, SAWL steel pipe, spiral submerged arc pipe, spiral welded pipe.

 

SSAW steel pipe is the raw material of strip coil, often temperature extrusion molding, automatic double-wire double submerged arc welding process made of spiral seam pipe.

Spiral steel pipe will strip into the pipe unit, the multi-roll rolling, strip rolled up, forming a circular gap opening gap, adjust the squeeze roll reduction, the weld gap control in the 1 ~ 3mm, and make both ends of the weld flush.

ssaw 2