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It’s important to note that the main difference between hot rolled and cold rolled steel is one of process. “Hot rolling” refers to processing done with heat. “Cold rolling” refers to processes done at or near room temperature. Although these techniques affect overall performance and application, they should not be confused with formal specifications and grades of steel, which relate to metallurgical composition and performance ratings. Steels of different grades and specifications can be either hot rolled or cold rolled—including both basic carbon steels and other alloy steels.
Cold worked steels are typically harder and stronger than standard hot rolled steels.
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” steel is often used to describe a range of finishing processes, though technically “cold rolled” applies only to sheets that undergo compression between rollers. Steel forms that are pulled, such as bars or tubes, are “drawn,” not rolled. Other cold finishing processes include turning, grinding, and polishing—each of which is used to modify existing hot rolled stock into more refined products.
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
Products name | Carbon Steel Coil |
Q345B，Q345C，Q345D，Q345E，Q390，Q390B，Q390C， | |
standard | ASTM、JIS、EN |
Thickness | 0.12-6.00mm,or customer's requirement |
Width | 600mm-1500mm, according to customer's requirement |
Type of Coating | Hot Dipped Galvanized Steel |
Finish: PVDF, HDP, SMP, PE, PU | |
Application | Construction, machinery manufacturing, container manufacturing, shipbuilding, bridges, etc. |
Package | Water proof paper is inner packing,galvanized steel or coated steel sheet is outer packing , side guard plate,then wrapped by |
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Behind the growth and success of Kuaima Steel is years of hard work and dedication in the steel industry and meeting customers' needs on time. Advanced technology, standard products, certified quality standards and the bestcustomer service make Kuiama Steel a true leader in the global market.
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Every industry has its unique set of material specifications and needs. That’s why you can count on the exceptional experience and industry knowledge of the professionals at Kuaima Steel - Meeting the Exact Needs of Every Industry That Uses steel.
Liaocheng Economic and Technological Development Zone, Shandong Province, China
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