Historical
AWWA C228-2014
Stainless Steel Pipe Flange Joints for Water Service--Sizes 2 in. Through 72 in. (50mm through 1,800 mm)
This standard describes minimum requirements for stainless-steel, ring-type, slip-on flanges and blind flanges for use in conjunction with stainless-steel pipe used in water service, including materials, design, manufacture, inspection, and testing.
AWWA: American Water Works Association [awwa]