AWWA-C208 Dimensions for Fabricated Steel Water Pipe Click here for PDF of AWWA-C208   4.1 .1 3. 2 Wrought steel. In small diameters (4 in. to 24 in. [1 0 0 mm to 60 0 mm] ), steel butt-welding fttings in accordance with ASME B1 6.9 conform- ing to AS TM A23 4/A23 4M are