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See Chinese contents: Q/BQB 401-2019 Q/BQB 401-2019: Dimension, shape, weight and tolerances for cold-rolled steel sheet and strip
This Standard specifies the requirements for classification and code, dimension, shape, weight and allowable deviation of cold-rolled steel sheet and strip. This Standard is applicable to cold-rolled steel strips with a thickness of 0.17mm~3.50mm and a rolling width of 600mm~2080mm, and the steel sheet horizontally-cut from it and steel strip longitudinally-cut from it produced by Baoshan Iron and Steel Co., hereinafter referred to as steel sheet and strip.
