
Rubber seals - Joint rings for pipelines for hot-water supply up to 110 degrees C - Specification for the material
出版:International Organization for Standardization

专家解读视频
NEN ISO 9631:2004 - Identical
BS ISO 9631:2004 - Identical
GB/T 27572-2011 - Modified
KS M ISO 9631:2008 - Identical
NEN ISO 9631 : 2018 - Identical
BS ISO 9631 : 2018 - Identical