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See Chinese contents: GB/T 33974-2017 GB/T 33974-2017: Hot rolling checker steel sheet and strip
This standard specifies the classification and code number, order content, dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, markings and quality certificates for hot rolling checker steel sheet and strip. This standard applies to diamond-shaped, lentil-shaped, round bean-shaped and combination-shaped hot rolling checker steel sheet and strip having a thickness of 1.4 mm ~ 16.0 mm.
