Steel plates are flat or rectangular, and can be directly rolled or cut from wide steel strips.
Steel plates are classified by thickness, with thin steel plates<4 millimeters (thinnest 0.2 millimeters), thick steel plates 4-60 millimeters, and extra thick steel plates 60-115 millimeters.
Steel plates are divided into hot-rolled and cold-rolled according to rolling. The width of the thin plate is 500~1500 millimeters; The width of the thickness is 600~3000 millimeters. Thin plates are classified by steel type, including ordinary steel, high-quality steel, alloy steel, spring steel, stainless steel, tool steel, heat-resistant steel, bearing steel, silicon steel, and industrial pure iron thin plates; According to professional purposes, there are oil barrel boards, enamel boards, bulletproof boards, etc; According to the surface coating, there are galvanized sheet, tin plated sheet, lead plated sheet, plastic composite steel plate, etc.
The steel grade of thick steel plate is generally the same as that of thin steel plate. In terms of quality, except for bridge steel plates, boiler steel plates, automotive manufacturing steel plates, pressure vessel steel plates, and multi-layer high-pressure vessel steel plates, some types of steel plates such as automotive beam steel plates (thickness 2.5-10 millimeters), patterned steel plates (thickness 2.5-8 millimeters), stainless steel plates, heat-resistant steel plates, etc. intersect with thin plates.
In addition, there is also a saying about the material of steel plates. Not all steel plates are the same, and the materials used for them are also different.