Spiral submerged arc welded pipes (SSAW steel pipes) - Hebei Haihao Group

Spiral submerged arc welded pipes (SSAW steel pipes)

Spiral submerged arc welded(SSAW) also know as submerged arc welded helical pipe(SAWH),its forward direction and forming tube centerline hose reel molding angle(adjustable),side molding edge welding and weld them into a spiral.

As we know,seamless steel pipe always is small dimension,longitudinal submerge arc weld steel pipe is large dimension,but for larger dimension,we should use the method of spiral submerge arc welding instead of longitudinal submerge arc welding.With this method,we can use narrow width steel plates to produce large dimension pipes.The outside diameter is determined by the angle of the de-coiled steel against the forming head. In this welding process, the material is submerged under a bed of fusible flex, which becomes conductive when heated. The resulting weld is sound, uniform and corrosion resistant, with a deep weld penetration.It is a high-speed,automated process that is used for long straight welds and is effective for thin sheets of metal.

Spiral submerged arc welding (SSAW) steel pipes

Spiral submerged arc welding (SSAW) steel pipes

Specification of spiral submerged arc welded pipes (SSAW steel pipes):

Out Diameter 219.1 mm-3048mm (8″-120″)
Wall Thickness 6mm-25.4mm
Length 2m/3m/4m/5.8m/6m/8m/9m/12m and other length required by customers
Standard ASTM A53,ASTM A312,ASTM A333,ASTM A252,API 5L PSL1/ PSL2,API 5CT,EN10217, EN10219,BS,JIS,ISO,etc
Steel Grade ASTM A53: GR A, GR B, GR C, GR D
ASTM A312: GR TP304,TP316,TP321,TP347
ASTM A333: GR 3,GR 6
ASTM A252 GR 1, GR 2, GR 3
API 5L PSL1/ PSL2: GR A,GR B,X42,X46, X56, X60,X65,X70
API 5CT: H40,J55,K55,N80,N80-Q,R95,M65,L80,L80-9Cr,L80-13Cr,C90,T95,C110,P110,Q125
BS 4360: Grade 43, Grade 50
EN:S275, S275JR, S355JRH, S355J2H
Surface Fusion bond epoxy(FBE) coating,coal tar epoxy,3PE,varnish coating,bitumen coating,black oil coating,galvanized,and as per customer’s requirement
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
Package Bags,bundles,PVC packing,carton packing,wooden case,or as customer request

Manufacturing process of spiral submerged arc welded pipes (SSAW steel pipes):

Spiral submerged arc welding (SSAW) steel pipes manufacturing process

Spiral submerged arc welding (SSAW) steel pipes manufacturing process

Haihao Group has 9 spiral submerged arc welded(SSAW) producting lines,the whole machine line has high level antomation,sample operation and stable welding quality.Inside and outside welding bead use the AC/DC double wire technology of submerged arc welding to ensure the interior and exterior quality.If you want to know more about our piping products(seamless/welded steel pipes,butt welding/forged pipe fittings,flanges),please email us:sales@haihaogroup.com