... qulity 4.Best design 5.Best srevice Price for structural steel fabrication specifications 1. Structure steel factory,warehouse2.Qualification:ISO9001: ... built-up welded H-section , hot-rolled H-section, channel, steel column, steel beam),standard frames, secondary framing, roof ... built-up welded H-section , hot-rolled H-section, channel, steel column, steel beam),standard frames, secondary framing, roof ...