AWWA C207-18 pdf download AWWA C207-18 pdf download.Steel Pipe Flanges for Waterworks Service, Sizes 4 In. Through 144 In. (10... 12/29/2021AWWA Standards105600 mm) Sizes 4 In. Through 144 In. (100 mm Through 3 Steel Pipe Flanges for Waterworks ServiceComments Read more