metal structure 1)Nice appearance 2)High strength, earthquake resistance 3)Easy to install and fast construction 1. Metal Structure Main Components Main FrameH beamPurlinC or Z section steelBracecross support, angle brace, brace between purlin/column/beamBoltanchor,ordinary,high strenght boltRoof &Wallsandwich panel or steel plateSandwich panel materialsEPS, polyurethane, rock wool, glass ...