... ' need;5)Product Type: Square pipe, Rectangular tubes, ERW tubes, Seamless &Welded steel pipe, Galvanized steel pipe, etc.hollow rectangular ... /T3091-2001Zn coating mass200-400g/m2 (glanvaized square pipe)Length of the Gi Square Pipe3m-12mProcessing techniquecoupling, necking ... punching and so on.Usage industryPetrol, gas, water pipe,construction,chimney pot.PackagingBundle,bulk in container or as ...