Prefabricated steel structure 1. Wide span,High strength 2. Easy to install 3. Fireproof, Insulated, steel structure manufa 1. Prefabricated Steel Structure main components Steel Structure Main ComponentsMain FrameH beamPurlinC or Z section steelBracecross support, angle brace, brace between purlin/column/beamBoltanchor,ordinary,high strenght boltRoof &Wallsandwich panel or steel plateSandwich ...