Elastomeric Seals - Material Requirements For Pipe Joint Seals Used In Water And Drainage Applications - Part 1: Vulcanized Rubber (pren 681-1)
出版:British Standards Institution
专家解读视频
Elastomeric Seals - Material Requirements For Pipe Joint Seals Used In Water And Drainage Applications - Part 1: Vulcanized Rubber (pren 681-1)
出版:British Standards Institution
专家解读视频