Definition of sheet steel: ASTM A573 gr 70 sheet steel with a thickness less than or equal to 4mm.The types of thin steel plate: the thin steel plate according to its different materials can be divided into ordinary thin steel plate and high quality thin steel plate two categories. According to the different processing methods of the thin astm A573 Gr 70 steel plate can be divided into two kinds: hot rolling and cold rolling.
Composite steel plate is a composite steel plate which is made of carbon steel or low alloy steel as the base material and coated with stainless steel, titanium alloy, astm a573 gr 70 and other composite materials, or sandwiched with other metal or non-metal materials between two layers of steel and processed by pressure or blasting. It is mainly used to make chemical equipment and chemical storage tank, or obtain special functions such as shock absorption. The manufacturing methods of composite steel plate include rolling method and explosion method, but most of them are rolling method.
Hot-rolled steel sheet / cold-rolled steel sheet: Steel ingots or slabs are difficult to deform at normal temperature and difficult to process. They need to be heated to 1100 ° C to 1250 ° C for rolling. This astm a573 gr 70 rolling process is called hot rolling. Rolling at room temperature is generally understood as cold rolling. However, from the point of view of metallurgy, the boundary between hot rolling and cold rolling should be distinguished by the temperature of metal recrystallization, that is, rolling below the recrystallization temperature is cold rolling; Rolling above the recrystallization temperature is hot rolling.
