killer007 发表于 2017-11-16 18:20:10

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




admin 发表于 2017-11-17 11:09:45

谢谢您的分享，金币已奖励!
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