Galvanized square tube is a type made from hot rolling or cold rollingGalvanized Steel StripOr galvanized coil as the blank, after cold bending processing to form, then furtherHigh-frequency weldingHollow square steel tubes with square cross-section shapes, either formed with the specified dimensions or pre-fabricated cold-formed hollow steel tubes that have been further processed with hot-dip galvanizing.Galvanized Square Tubing。