329220192 发表于 2018-1-24 14:50:57

NFPA 497-2017

NFPA 497-2017Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas扫描文档，文字不可以复制。













admin 发表于 2018-1-24 17:55:52

谢谢您的分享，金币已奖励!

lesonlee 发表于 2018-11-16 09:18:34

谢谢您的分享，谢谢!:D:D:D

woodych2013 发表于 2019-3-26 08:34:33

扫描版的又贵又不方便啊:dizzy:

jczwfy 发表于 2020-8-6 10:20:55

2017Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Area
页: [1]
查看完整版本: NFPA 497-2017