Welded pipe sizes,Lsaw Steel Pipe We stock from normal sizes to customizes sizes Outside diameter - OD 508mm - OD 1420mm Wall thickness - WT 6.35mm - WT 120 mm Length - 1 Meter - 12.8 Meter Welded pipe type ERW - Electric resistance welded pipe LSAW - Longitudinal submerged arch welded pipe SSAW - Spiral submerged arch welding pipe Quality and international standards All our stock is premier quality and International Standards. All stock come with mill cert and heat number. ISO9008-2001, GB/T3091-2008, GB/T9711.1-1997, API5L and etc. certification