... 4,quick delivery constrution use hot dip galvanized square and rectangular steel pipe/SHS/RHS 1. Outer diameter:20*20-400*400mm2 ... 1:2006, EN10219-2:2006 JISG3466-889. Application: square steel pipe are widely used in machine-building, construction, metallurgy, automobile-making ... of shipment: Tianjin Port14. Payment: T/T advance 30% or 100%L/C irrevocable at sight15. Package: packed in bundles, wrapped ...