cc523pate 发表于 2017-8-3 21:00:50

ISO 8639:2016 Glass-reinforced thermosetting plastics (GRP) pipes and fittings

ISO 8639:2016 Glass-reinforced thermosetting plastics (GRP) pipes and fittings — Test methods for leaktightness and proof of structural design of flexible joints


admin 发表于 2017-8-4 16:13:48

谢谢您的分享,金币已奖励!
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