GI Square pipe/SHS/RHS/hollow section Grade:Q195-Q345,20#,45# and so on Standard:BS,ASTM,GB Mill Price Good ... 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 ...