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发布时间：1981-11-24
实施时间：1982-01-01
本标准适用于桥梁建筑用碳素结构钢和低合金结构钢钢板及型钢。
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[YB 154-1963] 普通炭素钢和低合金钢初坯和钢坯技术条件[已作废]
发布时间：1978-09-01
实施时间：1978-09-01
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发布时间：1978-09-01
实施时间：1978-09-01
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[YB 170-1963] 普通碳素钢和低合金结构钢热轧条钢技术条件[已作废]
发布时间：1978-09-01
实施时间：1978-09-01
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[YB 188-1963] 优质炭素钢和合金钢初轧和钢坯技术条件[已作废]
发布时间：1978-09-01
实施时间：1978-09-01
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