Steel plates are divided by thickness, with thin steel plates<4mm (thinnest 0.2mm), medium thick steel plates 4-6 mm, and extra thick steel plates 60-180 mm.

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 thick plate is 600-3000 millimeters. The thin plates are divided into 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 the steel type; According to professional purposes, there are oil barrel plates, enamel plates, bulletproof plates, etc; According to the surface coating, there are galvanized thin sheets, tin plated thin sheets, lead plated thin sheets, plastic composite steel plates, etc.