Cold rolled hard coils are the product of pickling and cold rolling, which is the finished product resulting from the continuous rolling of hot-rolled coils after pickling at room temperature.

Cold rolled sheet, all known as ordinary carbon structural steel cold rolled sheet, also known as cold rolled sheet or cold plate, is ordinary carbon structural steel hot rolled steel strip after further cold rolling made of steel plate with a thickness of less than 4mm.

Cold rolled steel sheet is a product made from hot rolled steel coils rolled at room temperature below the recrystallisation temperature.

Cold rolled steel DC01 is a type of cold rolled steel plate, which belongs to the European standard steel, equivalent to China's Q195 steel and Q215 steel. 

Cold rolled DC02 is a kind of cold rolled steel plate, which belongs to one kind of cold rolled products.

SPCC-SD denotes standard tempered, non-gloss finish rolled, cold rolled carbon steel plate and strip for general use, single gloss linen material, with a Vickers hardness (HV) between 85 and 110.

China’s national standard steel number Q195 represents the meaning of “yield strength σs = 195MPa”, which is measured by the 16mm steel bar experimental value. If the diameter is 16~40mm steel, the yield limit is 185MPa, the United States ASTM naming rules adopted this. 195MPA. Yield strength 195MPA. lower strength than Q235. The price is cheaper. Used in construction, structure, motorcycle frame, etc.

ST12 is the German standard (DIN1623), which is equivalent to DC01 of EN10130, SPCC of JIS, ASTM A1008 CS of American Standard, and Q/BQB 403 DC01 of Baosteel Enterprise Standard.