... Co., LtdBusiness styleManufacture and ExpoterProduct LONGITUDINALLY WELDED STEEL PIPE FOR STRUCTURE (NEW SINDA)Information of the product1)Standard: GB8162,GB30872)Grade ... :10#,20# ,45#,A53(A,B),A106(B,C)ST37,ST44,ST52…3)OD:2.5-25.4mm4)WT ... 86-0317-6899168Skype annie 19900518 LONGITUDINALLY WELDED STEEL PIPE FOR STRUCTURE