Complaint
Cold rolled steel is essentially hot rolled steel that has been through further processing. Once hot rolled steel has cooled, it is then re-rolled at room temperature to achieve more exact dimensions and better surface qualities.
Cold rolled coils are more expensive than hot rolled coils. Because of its extra production costs, lower thickness and areas of application, crc prices are higher than classic hot rolled steels. Cold rolled coils are stronger and more durable than hot rolled coils. Since cold rolled coils are re-processed at room temperature, the durability and surface quality of the steel increases. Because cold rolled coils go through a complex production process, their cost may increase. When considering daily changing prices of steel it becomes important to regularly check the prices of cold rolled coils. There are many resources on the internet that show cold rolled steel price indexes which are easy to reach. In addition, cold rolled coil prices may change according to features like thickness, width, weight, quality, steel grade and additional processing.
Product Name | Hot Dipped Galvanized Steel Coil,Zinc Coated Steel ,GIHDGI |
Standard | EN10346, JIS G3302, ASTM A653,AS 1397,GB/T 2518 |
Steel Grade | Dx51D, Dx52D, Dx53D, DX54D,DX55D,DX56D,DX57D, S220GD, S250GD, S280GD, S320GD,S350GD, S390GD,S420GD,S450GD,,S550GD, SGHC, SGH340, SGH400, SGH440, SGH490,SGH540, SGCC,SGCH,SGCD1, SGCD2, SGCD3, SGCD4,SGC340, SGC400 , SGC440, SGC490,SGC570; CS-A,CS-B,CS-C,Grade 33,grade 37.grade 40,garde 50,grade60,grade70,grade80 G1,G2,G3,G250,G300,G450,G550 As Requirement |
Type | Coil/Sheet/Plate/Strip |
Thickness | 0.12mm-6.0mm or 0.8mm/1.0mm/1.2mm/1.5mm/2.0mm |
Width | 600mm-1800mm or 914mm/1000mm/1200mm/1219mm/1220mm/1524mm |
Zinc Coating | Z30g/m2-Z600g/m2 |
Surface Structure | Normal spangle (N),, spangle-free(FS),Zero Spangel |
Surface Structure | Oiled (O),Passivated(C),Passivated and oiled (CO) ,Sealed (S),Phosphate (P),Phoaphte and oiled (CO) |
Coil Weight | 3 Tons -8Tons |
With better surface characteristics than hot rolled steel, it's no surprise that cold rolled steel is often used for more technically precise applications, or where aesthetics are important. But due to the additional processing for cold finished products, they come at a higher price.
In terms of physical characteristics, cold rolled steels are typically harder and stronger than standard hot rolled steels. As the metal is shaped at the lower temperatures, the steel's hardness, resistance against tension breaking, and resistance against deformation are all increased due to work hardening.
These additional treatments, however, can also create internal stress within the material. This can cause unpredictable warping if the steel is not stress relieved prior to cutting, grinding, or welding.
Cold Rolled Coil, mostly used for technically sensitive and visually important works. To understand the production of cold rolled coil, it is necessary to know the hot rolled coil.
Hot rolled coil's making process involves melting steel, the production of slab and rolling it into coil at high temperature. Hot rolled coils are waiting at room temperature for cooling in order to take the next step at their process. After this point, the making process of the cold rolled coil begins. Cold steels begin to be re-rolled at room temperature. This process provides cold rolled coils with much quality surface and accurate dimensions.
This extra process also affects
cold rolled steel prices
. Cold rolled coils should be carefully stored in a cool area to get maximum efficiency from steel. In addition, the cold rolled coils are more demanding to the packaging and shipping conditions compared to the HRC.
Advantages:
Cold rolled steel can often be identified by the following characteristics:
Better, more finished surfaces with closer tolerances
Smooth surfaces that are often oily to the touch
Bars are true and square, and often have well-defined edges and corners
Tubes have better concentric uniformity and straightness
