Is the galvanized sheet tube cold galvanized

Usually said galvanized sheet refers to hot galvanized sheet. Hot galvanized sheet is hot rolled galvanized sheet, cold galvanized sheet is cold rolled galvanized sheet. In terms of material, the composition of the two galvanized sheets are basically similar. The difference is that the self cooling galvanized sheet is thinner than the hot galvanized sheet, the surface quality is better, and the process is more complex. The price is higher. From the process point of view, the steel by casting billet hot rolling rolling, rolling into a certain thickness of the plate, such as thickness of 10mm or so, if the user of the surface of the plate, thickness, mechanical strength is not higher requirements, it can be processed as finished products, such as galvanized, direct degree of sale, is hot plate. If the plate is known to have higher requirements, then the hot rolled plate is sent to the cold rolling line for reprocessing, after pickling, annealing, rolling and other processes, to get thinner, smooth surface, better mechanical properties of the cold rolled sheet.