... 9001;2008 5)Length:2-12m Welded Steel Pipe Q195O.D19.5—630 mmW.T0.6-35 ... 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, ... : 10 to 40 days Welded Steel Pipe water use