1, cold rolled plate: is a hot rolled coil as raw material, at room temperature in the recrystallisation temperature below the stop rolling products.
2, galvanised sheet: refers to the appearance of a layer of zinc-plated steel.
Second, different characteristics
1, cold rolled plate: because it does not stop heating, so there is no hot rolled often present pitting and iron oxide and other defects, good quality appearance, high brightness. And cold rolled products of high dimensional accuracy, product performance and organisation to meet some special application requirements, such as electromagnetic properties, deep drawing properties.
2, galvanised sheet: galvanised sheet due to the coating process in the disposal of different ways, the appearance of the state is different, such as ordinary zinc flower, fine zinc flower, flat zinc flower, no zinc flower, and phosphate disposal of the appearance. German norms also rules have appearance level.
Third, the use of different
1, cold rolled sheet: mostly used in automobile manufacturing, electrical products.
2, galvanised sheet: mainly used in construction, light industry, automotive, agriculture and fisheries and commercial industries. The construction industry is mainly used for the manufacture of corrosion-resistant industrial and civil construction roof panels, roof grills, etc.; light industry with its manufacturing appliances shell, civil chimneys, kitchen utensils.