Introduction:Spiral steel pipe is a kind of welded steel pipe by spiraling the steel strip or coil under the normal temperature through automatic double wire double-sided submerged arc welding process. It is also called SSAW pipes. Spiral welded pipe is characterized by uniform deformation, small residual stress, no surface scratches during the molding process. The SSAW pipes are mainly used for conveying oil and natural gas pipeline, can also be used for civil engineering structures pipes for docks, bridges and other basic pile.

Outside diameter：Φ219-2820mm 
Wall thickness：5-35mm
Standard：API5L, API5CT, ASTM-A106,ASTM-A53, SY5037-2000, GB/T3091, BS1387-85, JIS-G344
Material：BS:1387, EN10217:S185, S235,S235JR, S235 G2H, S275, S275JR, S355JRH, S355J2H, St12, St13, St14, St33, St37, St44, ST52 
ASTM A 53: Gr. A, Gr B, Gr C, Gr.D
API 5L: A, B, X42, X46, X52, X56, X60, X65 X70
GB/T9711: L175, L210, L245, L290, L320, L360, L290, L320, L360, L390, L415, L450, L485, L555
GB/T3091, SY/T5037, SY/T 5040,CJ/T 3022:Q195, Q215, Q235, Q275, Q295, Q345, 08F, 08, 08AL, 08F, 10F, 10, HG5, DF08 SPHC, M8
Length：Random length or cut length 12m
End: square ends (straight cut, saw cut, and torch cut). or beveled ends
Surface: Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings (Coal Tar Epoxy,? Fusion Bond Epoxy, 3-layers PE)
Test:Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield, strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.