International Organization for Standardization (ISO)
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ISO 7005-3:1988
Scope
Specifies requirements for circular flanges of series 1 and 2. It also specifies the types of flanges and their facings,dimensions, tolerances, bolt sizes (including copper alloy), flange face surface finish, marking, testing, insperation and materials. An annex includes application and installation.
ISO 7005-3:1988 history
1988ISO 7005-3:1988 Metallic flanges; part 3: copper alloy and composite flanges