... Product Introduction1.Material:Carbon steel(seam or seamless),stainless steel,alloy steel2.Size:1/2'' TO 72 ... price4.ISO9001,PED and API approvedSpecifications Materialcarbon steel, stainless steel, alloy steelTechniquewelded, bending,forged,exturdConnectionweldingHead codebevel the ... BS,GBwe can also produce according to drawingSpecification standardsANSI B16.9, ANSI B16.28, JIS B2311, DIN 2605, ...