ygs67 发表于 2016-1-22 08:09:27

ASTM C990-09(2014)

ASTM C990-09(2014) Standard Specification for Joints for Concrete Pipe, Manholes, and Precast Box Sections Using Preformed Flexible Joint Sealants

nbjwbzj 发表于 2016-1-22 10:32:54

谢谢分享！！！！！！！

admin 发表于 2016-1-22 17:01:23

谢谢您的分享,金币已奖励!
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