Hot-rolled coils are used as feedstock to produce cold-rolled coils. The processing begins by pickling the feedstock in acid and washing on continuous pickling lines to remove scale and impurities from the strip surface.
The coils are then transferred to continuous and reversing cold-rolling mills, where plastic deformation without pre-heating is applied until the cold-rolled coil reaches the customer’s required thickness. The external deformation force causes changes in the structure and, therefore, properties of the steel, which is called cold hardening. The structure of cold-hardened metal is characterised by the predominant orientation of crystals (texture) towards the rolling direction. While cold hardening promotes greater strength and hardness, as well as lower plasticity and viscosity, these properties may differ along the cross section of the coil. Therefore, once discharged from the rolling mill, most merchant cold-rolled coils go through heat treatment, ie annealing, in bell-type furnaces or on continuous lines.
In the final production stage, the annealed cold-rolled coils are transported to coiling, skin-pass and straightening facilities, slitting or cutting machines, followed by inspection, packing and placing the cold-rolled coils in the finished goods storage area to be shipped to customers.
EN 10130 DC04 Cold Rolled High Drawing Steel Coil Details
Specification | Description | Cold Rolled Steel Coil |
Of thickness | 0.3-3.0mm | |
Material | SPCC ... DC01-06 ... ST12-16 .. | |
Inside diameter | 508mm / 610mm | |
Surface | A little oil from the skin pass | |
Spangle | Zero / Ragular / Great Spangle | |
Zinc coating | 40g / m2-275g / m2 | |
Packaging: | Standard export package | |
Standard | DC 04 | |
| EN10130 | ||
DC 04 steel (1.0338 material) is a European standard 10130 cold-rolled quality low-carbon steel coil product for cold forming,with a minimum width of 600 mm and a minimum thickness of 0.35 mm.
EN 10130-DC04 Cold Rolled Coil Specification
| C | P | S | Mn | Ti |
| ≤0.08 | ≤0.030 | ≤0.030 | ≤0.40 | - |
| Yield Strength Mpa | Tensile Strength Mpa | Elongation(Thickness) | ||
| 140-210 | 270-350 | ≥38 | ||
The industries that primarily consume cold-rolled coils include construction, machine building, automotive,products with metal and organic coating, and white goods.
In the construction sector, cold-rolled steel is mainly used to produce tubes and closed sections, facade elements and steel structures.
Gnee Steel Group produces cold-rolled coils in a thickness range of 0.35-2.0 mm from carbon and low-alloy steel in accordance with the requirements of international standards.
We also offer different modes of transport depending on the customer's destination: rail transport and ship transport.
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