... :219-3600mm,WT:6-30mm 2.Standard:API 5L PSL1,GB/T9711.1 3.Material:X42 ... .SGS inspection 5.Mill supply 1.Commodity NameSpiral steel pipe2.StandardSY/T5037,SY/T5040,ASTMA252,EN10217,EN10219 ... ,GB/T9711.1,API 5L3.Outer Diameter219.1—3600 mm4.Wall Thickness6mm ... France, England, Belgium, etc13.CertificatesAPI 5L PSL1,PSL2 , API 5CT, ISO ,CE API 5L PSL2 Spiral Seam Steel Pipe