Çin Yapı ve İnşaat İhracatı Teklifleri Çin Yapı ve İnşaat İhracatı Şirketleri, Çin Yapı ve İnşaat İhracatçıları

Hot dipped galvanized,electro galvanized,bake galvanzed,black Size is from 1/4-6 inch. Standards:BS,DIN,American standard

Process: ERW (Electric Resistance Welded) HFI (High Frequency Induction) EFW(ELECTRIC FUSION WELDED TUBE) LSAW (Longitudinal Submerge-arc Welded) UO(UOE)、RB(RBE)、JCO(JCOE) DSAW (Double Submerged arc welded) SAW (Spiral Welded) SSAW (Spiral Submerged-arc Welded) Quality Standard: ERW HFI , EFW, LSAW, DSAW: GB/T3091 Welded steel pipe for low pressure liquid delivery GB/T9711 Petroleum and natural gas industries--Steel pipe for pipelines IS: 3589 Steel tubes for water and sewage