版本
Cold-rolled sheet steel and steel strips made of carbon structural steel and low-alloy structural steel are used in a wide range of applications. GB/T 11253-1989 is the national standard for the production and quality assurance of these products. This article provides a detailed description of the standard.
Background
Carbon structural steel and low-alloy structural steel cold-rolled sheet steel and steel strips are widely used in construction, automobiles, and ships, among other industries. Therefore, a reliable and applicable national standard is required. GB/T 11253-1989 was issued in 1989 and amended in 2009 and 2018.
Product Specifications and Quality Requirements
GB/T 11253-1989 applies to cold-rolled sheet steel and steel strips made of carbon structural steel and low-alloy structural steel. The standard applies to both hot-rolled and cold-rolled sheet steel and steel strips. The chemical compositions shall meet the relevant requirements of GB/T 700, GB/T 1591, and GB/T 2975 as appropriate. The GB/T standard does not limit the applications of the steel products.
Tested properties of the steel products, including tensile strength, yield strength, elongation, percent reduction of area, impact energy, etc., should satisfy the requirements of the relevant sections specified in the standard.
The mechanical properties of cold-rolled sheet steel and steel strips produced by different manufacturers should be determined by a standard test piece. Samples of steel sheets, steel strips, cut sheets, or cut strips tend to slant, and the angle should not be more than the maximum angle specified in GB/T 11253-1989.
The standard also specifies the permissible deviation of average values and individual values from the applicable standard range.
Conclusion
GB/T 11253-1989 is the national standard for cold-rolled sheet steel and steel strips made of carbon structural steel and low-alloy structural steel. The standard covers everything from product specifications and quality requirements to permissible deviations. The standard provides reliable and applicable quality assurance for users.
