API 5LD Corrosioin resistant alloy clad or lined steel pipe Standard: ASTM,JIS,EN,ISO,BS,GOST,API ... W.T.: 2mm API 5LD Corrosioin resistant alloy clad or lined steel pipe ASTM A519 50B40 50B44 50B46 50B50 50B60 51B60EN10208 ... IF ANY INQUIRY! API 5LD Corrosioin resistant alloy clad or lined steel pipe