Steel plate basics (including steel) classification 1, according to the thickness of the classification: (1) Sheet (2) plate (3) slabs (4) special plate 2, according to the production method of classification: (1) hot-rolled steel ( 2) cold-rolled steel plate 3, characterized by surface classification: (1) galvanized sheet (galvanized plate, galvanized sheet) (2) tin plate (3) composite plate (4) color coated steel 3, according to use Category: (1) a bridge plate (2) boiler plate (3) shipbuilding steel plate (4) armor plate (5) automotive steel (6) Roof plate (7) Structural Steel (8) electrical steel (silicon) (9) of the spring Plate (10) Other