likeac 发表于 2017-1-24 18:27:14

NFPA 56 Standard for Fire and Explosion Prevention During Cleaning and Purging o

NFPA 56-2014 Standard for Fire and Explosion Prevention During C



leaning and Purging of Flammable Gas Piping Systems

daweizhixing 发表于 2017-1-24 19:18:42

最新的规范，确实是急需的

h0912271847 发表于 2017-1-24 21:57:06

非常感谢分享 NFPA 56-2014

admin 发表于 2017-1-25 12:35:38

谢谢您的分享,金币已奖励。
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