... 2.WT:2-40mm 3.Certification:CE Hydraulic precision tubesProduct: steel pipe1) Custom specificationsSize: 20mm×2mm(OD×THK) to 377mm ... Custom packing:Inner packing:caps at both ends,10 steel strong strips on every bundle,Outer packing: PE coating outerside.7 ... , 30CrMo, Q345, St37, St52, St45, St35.8, ST35 TechniqueCold rolled, Cold drawn Thickness2-40mm , or as your requirements Outer diameter20-377mm ...