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See Chinese contents: GB/T 20564.7-2022 GB/T 20564.7-2022: Continuously cold rolled high strength steel sheet and strip for automobile -- Part 7: Martensitic steel
This document specifies the classification and designation representation method, order content, dimension, shape, weight, technical requirements, test methods, inspection rules, package, mark and certification of continuously cold rolled high strength martensitic steel sheet and strip.
