Submerged Arc Welding Helix (SAWH or SSAW) are manufactured as below processing.
Specifications
Outside Diameter：Φ508mm-Φ4500mm (20"- 177")
Wall Thickness：6.4-25.4mm（1/4"-1"）
Quality Standards：API、DNV、ISO、DEP、EN、ASTM、DIN、BS、JIS、GB、CSA
Length：6-130m（20'-427'）
Grades：API 5L B, X52, X56, X60, X65, X70, X80 etc.
Mill Test Certificate:
EN 10204 3.1 and EN 10204 3.2
Third party inspection: TUV, ABS, LR, DNV, BV, etc.
Surface
Lightly oiled, Hot dip galvanized, Electro galvanised, Black, Bare, Varnish coating/Antirust oil, Protective Coatings(Coal Tar Epoxy; Fusion Bond Epoxy, 3-layers PE)
Application
Piling pipe
Water lines
Oil & gas
Drainage projects
Construction piling
Irrigation
Sewage Treatment
Road & highways
Harbor structure
...