
En 12560-2 Flanges And Their Joints - Dimensions Of Gaskets For Class-designated Flanges - Part 2: Spiral Wound Gaskets For Use With Steel Flanges
出版:British Standards Institution

专家解读视频
En 12560-2 Flanges And Their Joints - Dimensions Of Gaskets For Class-designated Flanges - Part 2: Spiral Wound Gaskets For Use With Steel Flanges
出版:British Standards Institution
专家解读视频