AWWA C228:2008
AWWA C228:2008 Stainless-steel Pipe Flanges For Water Service - Sizes 2 In. Through 72 In. (50 Mm Through 1,800 Mm) Specifies stainless-steel ring-type slip-on flanges and blind flanges for use in conjunction with stainless-steel pipe used in facilities of waterworks service.