Standard API-5L, SY/T5037-2012 Grade Q235B,Q345B,SS400, S235JR, X70 Thickness 6mm-18mm Place of Origin Handan Hebei , China Outer Diameter 219-2020 Technique ERW Certification ISO , API 5L Application: Structure pipe Surface Treatment: Gas pipe, Fluid pipe. Oil pipe , water Packaging&Deliver Packaging Details : Bundle Delivery Detail: bulk or container