hollow structural steel pipe 1.Steel grade:St37-2, St52-3, Q195, ... 600*600mm 3.Length:5.8-12m hollow structural steel pipe1.Steel standard: DIN EN 10210, DIN EN 10219, ... ends6.Packing: packaged in bundles, wrapped with steel strips.7.We can supply seamless square and ... building, automobile manufacturing, shipbuilding, electric power.9.Specification:SQUARE STEEL PIPE L1 (mm)L2 (mm)Thickness (mm)L1 ...