Steel construction system products ordinary welded H beamFunction Beam, columnused as various steel structure beam and column on workshop, warehouse, office building and power plant Coating 1) Painting: Alcohol acid paint, epoxy zinc rich paint and chlorinated rubber paint. Various colors available. 2) Hot dip galvanizing. The hot dip galvanizing thickness is about 60 120 microns and 275 500g/. steel pipe column Function Used on various kinds of heavy duty steel structure factory building. For example, the heavy duty workshop with 200 600tons crane. Coating 1) Painting: Alkyd paint, epoxy zinc-rich primer and chlorinated rubber paint. Various colors available construction steel column Function Used on various kind of heavier duty steel structure workshop column. For example, the heavy duty workshop with 50 100 tons crane. Coating 1) Painting: Alkyd paint, epoxy zinc-rich primer and chlorinated rubber paint. Various colors available. 2) No fireproof paint in factory. steel pipe truss Function Used on various kinds of large span roof truss. As gymnasium, airport and special buildings etc. Coating 1) Painting: Alkyd paint, epoxy zinc-rich primer and chlorinated rubber paint. Various colors available. 2) No fireproof paint in factory.