... )Certificates:ISO 9001;2008 5)Length:2-12m Carbon Steel Pipe O.D19.7—630 mmW.T0.7-35 mmO. ... in normal; also according to customers’ requirementsStandardBS, ASTM, EN, API 5L, API 5CT, DIN, GB/T, etc.TechniqueweldedProduct CategoryMetallurgy, Mineral & ... EnergyMaterialQ195/Q215/Q235/Q345/A53(A.B)CertificatesISO, API 5L, API 5CT, CE, etc.Surface TreatmentsBlack Vanished, PP,PE,3PE ...