Do cold coils belong to carbon steel coils

　　Cold coil refers to cold rolled coil, while hot coil refers to hot rolled coil. Cold rolling and hot rolling are two different steel rolling technologies. As the name suggests, cold rolling refers to rolling steel at room temperature, which has a high hardness. Hot rolling is the process of rolling steel at high temperatures.

　　(1) Hot rolled coil:

　　1. Thickness: 1.2mm-8/12mm (with different thicknesses and prices)

　　2. Width: 1000mm/1250mm/1500mm (non-standard widths generally require an additional price)

　　3. Brand:

　　Domestic: (hard, high carbon content) q235-q215-q195 (soft, low carbon content)

　　Japan: SS400-SS330-SPHC (commonly used domestically)

　　CIS: 08kp-08yu (strong drawing and deep drawing)

　　Germany: st12-st13-st14 (strong drawing, deep drawing)

　　4. Roll weight: mainly 15 tons per roll, but there are also requirements of less than 10 tons per roll. We need to consider issues such as the load-bearing capacity of the leveling machine and the load-bearing capacity of the lifting equipment.

　　5. Production capacity:

　　Handan Steel and Baosteel can produce with a thickness of 1.5mm (Handan Steel has poor quality)

　　Bensteel, Ansteel, and Taiyuan Iron and Steel can produce 1.8mm thick

　　6. Product quality and price:

　　Commonwealth of Independent States: Poor quality and low price, with 08kp grade hot coil manufacturers including Illchy, Zaprostal Steel Plant in Ukraine, and Inspat Steel Plant in Kazakhstan (with Ukraine having the worst quality and lowest price). 08yu brand hot coil manufacturers include Russian (mmk) steel (08yu brand has better quality than 08kp brand).

　　Japan: Good quality, high price, mainly produced by six major blast furnace factories such as Nippon Steel, Sumitomo, nkk, Kawasaki, etc.

　　South Korea: Good quality, high price, mainly produced by POSCO (POSCO).

　　Taiwan: Good quality, high price, mainly produced by China Steel and Yilong.

　　South Africa: The quality is better than that of the Commonwealth of Independent States, second only to Japan and South Korea, and the main manufacturer is Sodhna.

　　1.5-2.0 (excluding 1.5, including 2.0) The quality of domestic manufacturers is poor, and the quality above 2.0 can meet the usage requirements.