
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

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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
專家解讀視頻