DR 91086被替代
Elastomeric joint rings for waterworks purposes
出版：Standards Australia
专家解读视频
基本信息
标准编号： DR 91086
标准类别：Draft
出版单位：Standards Australia
标准页数：0
标准简介
Proposes, where appropriate, replacement of previous prescriptive with performance requirements for six nominal elastomer hardnesses, for joint rings manufactured from natural rubber, synthetic rubber (polychloroprene) (CR), styrene-butadiene rubber (SBR), polyisoprene rubber (IR), ethylene -propylene terpolymers (EPDM) and nitrile-butadiene rubber (NBR)) and mixtures of synthetic and natural rubbers. The appendices cover purchasing guidelines, determination of ring hardness and compression stress relaxation, testing of joins in rings and photographs of typical examples of 9 of the 13 defined physical defects.
