Because the profiled steel plate is used in the building to support the permanent formwork of the floor slab and work together with the reinforced concrete, it not only requires its mechanical and anti-corrosion performance, but also requires the necessary
fire resistance to meet the requirements of the design and specifications.
The allowable deviation of the size, form and thickness of the profiled steel sheet used in the construction engineering shall meet the requirements of profiled steel sheet for building (GB / t12755); the geometric dimension of profiled steel sheet shall
be sampled before leaving the factory, and each roll of the rolled steel sheet shall be sampled for at least 3 pieces; the base material of the profiled steel sheet shall be free of cracks, and the galvanized steel sheet shall be free of rust
spots; the allowable deviation of the profiled steel sheet size:
A. the plate thickness limit deviation conforms to the corresponding standards of raw materials;
B when the wave height is less than 75mm, the allowable deviation of wave height is ± 1.5mm; when the wave height is more than 75mm, the allowable deviation of wave height is ± 2.0mm;
The allowable deviation of C wave distance is ± 2mm; d when the plate length is less than 10m, the allowable deviation of plate length is + 5,0mm, and the lateral bending value is less than 8mm; when the plate length is more than 10m, the allowable
deviation of plate length is + 10,0mm. The requirements of profiled steel plate in building materials industry are very standard, which also greatly improves the quality of construction industry.