... , Normal bolts(M16x50;M12X30) Drawings&Quation: 1.Customized design to welcome. 2.As long as you like, we can ... C/Z channel,corrugated steel sheet,etc.*Products&Service Scope:Design&Engineering Service, Steel Building,Space Frames, Portable Cabins, ... framing, roof & wall materials, Tempcon (sandwich) panels* Engineering Design Software:AutoCAD,PKPM,MTS,3D3S, Tarch, Tekla Structures(Xsteel)V12.0 ...