high frequency electric weld (ERW) line pipe and standard electric resistance weld pipe products are smoothly finished and thin-walled. They are produced by continuously forming coiled hot rolled strip into a tube and welding the longitudinal seam using high-frequency electric resistance welding.
Size:(ERW, HFI, EFW)
Outer Diameter: 6mm-610mm (1/16″-24″)
Wall Thickness: 0.3mm-22mm
ERW line pipe– for the transportation of oil, natural gas and chemical materials
Standards: AP-5L PSL1/ PSL2 GB/T9711.1-1997 GB/T9711.2-1999Steel
ERW Casing pipe–petroleum and nature air exploration
Standards： API SPEC 5CT, SY/T5989
Materials ：H40 J55 K55
Features of ERW welded pipe products:
2.ERW steel pipe products have uniform wall thicknesses made from hot-rolled steel strip
3.Stronger, lighter walls: Abter’s higher strength, lighter gauge steel strip is fused by high frequency electric resistance welders into high toughness steel pipe that meets exacting tolerances and strength specifications.
what is CDS pipes?
Seamless steel pipe is alos called CDS pipes (Cold drawn seamless pipe). It’s is used widely in maching parts, shafts, bearings, cylinders having strength of 75000 PSD tensile.
It is a solid carbon steel rod which is pushed on to the mandrel to form the shape of tube. It is available in different sizes.