ir_71 发表于 2014-6-29 17:16:33

ISO 21809-2:2007

ISO 21809-2:2007
Petroleum and natural Gas industries -  External Coatings for Buried or Pipelines used in submerged Pipeline  Transportation systems -
Part 2: Fusion-bonded epoxy coatings



41060 [/ attach]

41060 [/ attach]


admin 发表于 2014-6-30 09:59:33

谢谢您的分享,金币已奖励

countryboy66 发表于 2014-9-7 19:43:03

原来我有的是带draft的,终于找到正版的,谢谢上传大虾。
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