... : Q195/Q215/Q235,20#,45# etc.2)Size:20 x 20mm ---400 x 400mm and thickness: 0.3 - 12mm3)Length: 4- ... G3444,GB/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 per ...