Galvanized open steel flooring Floor Deck (steel bearing plate, construction steel sheeting) is cold-formed of galvanized steel sheet by roll forming, cross-section into a V-shaped, U-shaped, trapezoidal or similar shape of these types of waveforms used as permanent formwork also can be selected for other purposes. 1 Advantage of composite floor steel decking: (1) light in weight, high intensity, huge lodging capacity as well as good anti-earthquake capability (2) .simple in construction operation, easy to assemble (3) reducing the cost of raw material (4) enable easy operation wiring, and so on 2 Raw materials of composite floor steel decking: (1) Hot dipped galvanized steel sheet (2) Galvalume steel sheet(Zinc- aluminum galvanized steel sheet) (3) Aluminum sheet 3.specification of composite floor steel decking: Thickness 0.8-1.2mm; max 1.5mm Width 600mm-1025mm (depend on the model you chose) Length 0mm-11800mm Certification JIS/ASTM/GB/T12755-2000 Thickness Tolerance: +/-0.04mm Width Tolerance: +/-5mm Zinc Coating: 60-275g/m2; max 350g/sqm Surface Treatment: C. S. P. Q. T. V. O. Anti-finger Packing: Seaworthy packing 4.model of composite floor steel decking :