... section, straight or tapered section, suit for conventional metal building. aa2aaTruss type member, for heavy (1)Solid web H section, ... straight or tapered section, suit for conventional metal building.(2)Truss type member, for heavy fabricated building with heavy duty ... 3)Cross section, suit for heavy fabricated building or multi-storey building.(4)Box section, suit for multi-storey building.(5)Bar- ...