Historical
AWWA C207-2013
Steel Pipe Flanges For Waterworks Service Sizes 4 Inch Thru 144 Inch (100 Mm Thru 3,600 Mm)
This standard covers two types of slip-on flanges, ring type and hub type, that may be used interchangeably if the dimensions given in the standard are used.
Content Provider
AWWA: American Water Works Association [awwa]