High quality hot dipped GI steel pipe for scaffolding. $450.00 Trading Company. Shanghai, China Since 2016.Sturdy, Stainless high quality rectangular tube for high quality square and rectangular gp pipes and tubesTube High Quality Rectangular Gi Rectangular Pipe 75x75 Gi Tube 3 Inch High Quality Galvanized Round Square Rectangular Pipes US $550.00-$750.00 / Ton 10 Tons (Min. Order)