Steel plates for steel drums are classified by thickness: thin plates, medium plates, thick plates, and extra-thick plates. Classified by production method: hot rolled steel plate, cold rolled steel plate. Classified by surface characteristics: galvanized sheet (hot-dip galvanized sheet, electro-galvanized sheet), tin-plated sheet, composite steel sheet, color coated steel sheet. Classified by use: bridge steel plate, boiler steel plate, shipbuilding steel plate, armor plate, automobile steel plate, roof steel plate, structural steel plate, electrical steel plate (silicon steel sheet), spring steel plate, and others.
Chinese brand representation: (1) Cold rolled non-oriented silicon steel strip (sheet) Representation method: DW + iron loss value (at a frequency of 50HZ, the waveform is sinusoidal magnetic peak value is 1.5T unit weight iron loss value) 100 times + 100 times the thickness value. For example, DW470-50 represents a cold-rolled non-oriented silicon steel with an iron loss of 4.7 w/kg and a thickness of 0.5 mm. The new model is now 50W470. (2) Cold-rolled oriented silicon steel strip (sheet) Representation method: DQ+ iron loss value (100 times the unit weight iron loss value at a frequency of 50 Hz, the sinusoidal magnetic induction peak is 1.7 T) + 100 times the thickness value . Sometimes the iron loss value is followed by G to indicate a high magnetic induction. For example, DQ133-30 represents a cold rolled oriented silicon steel strip (sheet) with a steel loss value of 1.33 and a thickness of 0.3 mm. The new model is now 30Q133. (3) Hot-rolled silicon steel sheet The hot-rolled silicon steel sheet is represented by DR, and is classified into low-silicon steel (silicon content ≤2.8%) and high-silicon steel (silicon content >2.8%) according to the silicon content. Representation method: 100 times the DR+ iron loss value (the unit weight iron loss value when the maximum magnetic induction intensity is changed by 50HZ and the sinusoidal change is 1.5T) and 100 times the thickness value. For example, DR510-50 represents a hot rolled silicon steel sheet having an iron loss value of 5.1 and a thickness of 0.5 mm. JDR+ iron loss value + thickness value for hot-rolled silicon steel sheet for household appliances