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See Chinese contents: GB/T 20564.12-2019 GB/T 20564.12-2019: Continuously cold rolled high strength steel sheet and strip for automobile -- Part 12: Dual phase steel with high formability
This Part of GB/T 20564 specifies the terms and definitions, classification and designation representation method, ordering contents, dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of continuously cold rolled high strength steel sheet and strip for automobile. This Part applies to steel sheets and strips with a thickness of 0.50 mm ~ 3.00 mm, used for the manufacture of complex-forming automotive structural parts and reinforcements.
