galvanized steel tube 1.manufacturing steel pipe 2.MOQ: 20 ton 3.zinc ... ' need;5)Product Type: Square pipe, Rectangular tubes, ERW tubes, Welded steel pipe, Galvanized steel pipe, etc.;6)Usage: ... on.Product nameGalvanized round PipeSpecification10*10-300*300mmMaterial of Square PipeQ195, Q215, SGCC,DX51DStandardsASTM-A53.BS1387-85,JIS ... hot dipped, ERW pipe and so on. galvanized square steel pipe