... pipe with good quality :high quality,low price,multi-standardCertificate:ISO9001:2000,CE.Size: 1/2"-48"Material: stainless steel,carbon steel,alloy ... steelStandard: ANSI,JIS,BS,DIN,ASME,API,GB,ectProcess: Cold Draen,Cold Rolled,EFW,ERW,Hot Rolled,SAW ... .and so on.Structure type: seamless pipe,straight steel pipe,square pipe,spiral ...