This standard specifies order contents; classification and code; dimension, shape, weight and permissible deviation; technical requirements; test methods; acceptance rules as well as packaging, marking and quality certificate of cold forming steel sections.
This standard is applicable to cold forming steel sections produced on consecutive roller cold forming units by using cold-rolled, hot-rolled or coated (plated) steel plates and strips which are deformed through cold working.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room Temperature
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method
GB/T 699 Quality Carbon Structure Steels
GB/T 700 Carbon Structural Steels
GB/T 714 Structural Steel for Bridge
GB/T 1591 High Strength Low Alloy Structural Steels
GB/T 2101 General Requirement of Acceptance, Packaging, Marking and Certification for Section Steel
GB/T 2518 Continuously Hot-dip Zinc-coated Steel Sheet and Strip
GB/T 2650 Impact Test Methods on Welded Joints
GB/T 2651 Tensile Test Method on Welded Joints
GB/T 2975 Steel and Steel Products - Location and Preparation of Test Pieces for Mechanical Testing
GB/T 3280 Cold Rolled Stainless Steel Plate, Sheet and Strip
GB/T 3524 Hot-rolled Carbon and Low Alloy Structural Steel Strips
GB/T 4171 Atmospheric Corrosion Resisting Structural Steel
GB/T 6723 Cold forming Sectional Steel - Open Sectional Steel for General Structure
GB/T 6726 Cold Forming Sectional Steel for Vehicles - Dimensions Shape Weight and Tolerances
GB/T 6728 Cold Formed Steel Hollow Sections for General Structure
GB/T 12754 Prepainted Steel Sheet
