It is a flat steel made by pouring molten steel and pressing it after cooling.

It is 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, medium thick steel plates 4-60 millimeters, and extra thick steel plates 60-115 millimeters.

Steel plates are divided into hot rolling and cold rolling 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, 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.