... up welded H-section , hot-rolled H-section, channel, steel column, steel beam),standard frames, secondary framing, roof & wall materials, ... . Hence, HDSS has the ability to design and manufacture single-storey workshop/ plant , tier and high-rise steel structure ... up welded H-section , hot-rolled H-section, channel, steel column, steel beam),standard frames, secondary framing, roof & wall materials ...