Requirements for the quality of excellent galvanized metal roofing sheet contain sizes, surface,mass of zinc coat, chemical composition, shape of sheet, the function of machine and package etc. . CAMELSTEEL shares several aspects with you:
1.Package: It is divided into specified lengths of galvanized metal roofing sheet and galvanized steel coil. It is generally iron package with moist-proof paper inside and tied firmly with strap,to avoid the galvanized metal roofing sheet rub with each other.
2.Specification and size: whether meet the specifications of the customer needs in strict accordance with standards.
3.Surface: Because of the galvanized metal roofing sheet has different methods in the process of coating process, such as regular spangle, big spangle, small strangle and zero spangle etc., the incisal specified lengths of galvanized metal roofing sheet and galvanized steel coil can’t exist the shortcoming that affect the use, but the steel coil may allow the effect of welding position.
4.Mass of zinc coat: It refers to the Zn thickness of galvanized metal roofing sheet. There are two kinds: the same and the different mass of Zn coat on both sides.
5.The function of machine: Anti-tensile experiments and bending experiments.