标题: BS EN 1515-3-2005 Flanges and their joints — Bolting — Part 3：Classificati [打印本页] 作者: killer007 时间: 2017-11-16 18:20:26 标题: BS EN 1515-3-2005 Flanges and their joints — Bolting — Part 3：Classificati
BS EN 1515-3-2005 Flanges and their joints — Bolting — Part 3：Classification of bolt materials for steel flanges, class designated
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