标题: BS EN 1515-2-2001 Flanges and their joints — Bolting — Part 2：Classificati [打印本页] 作者: killer007 时间: 2017-11-16 18:20:10 标题: BS EN 1515-2-2001 Flanges and their joints — Bolting — Part 2：Classificati
BS EN 1515-2-2001 Flanges and their joints — Bolting — Part 2：Classification of bolt materials for steel flanges, PN designated
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