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被代替 GB/T 9946-1988
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热轧L型钢尺寸、外形、重量及允许偏差 Dimensions, shape, weight and tolerances for hot-rolled L-sectional steel
发布日期: 1988-09-20
实施日期: 1990-01-01
废止日期: 2009-04-01
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