BS 1560-3.3:1989 - Circular flanges for pipes, valves and fittings (Class designated). Steel, cast iron and copper alloy flanges - Specification for copper alloy and composite flanges
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This Section of BS 1560 specifies requirements for Class designated circular copper alloy and composite flanges in Class 150 and Class 300 ratings and in nominal sizes up to 36 in of the type given in table 1.
BS 1560-3.3:1989 - Circular flanges for pipes, valves and fittings (Class designated). Steel, cast iron and copper alloy flanges - Specification for copper alloy and composite flanges