Malleable iron

Standard Malleable Iron Fittings, Fed

Spec

WW-P-521F, ANSI B-16

3 (Dimensions), ANSI B-2

1 (Pipe Threads), ASTM A-197 (Chemical & Physical Properties), ASTM A-153 (Galvanizing), Ferrous Plugs, Bushings, and Locknuts, Fed

Spec

WW-P-471-B, ANSI B-16

4 (Dimensions), ANSI B-2

1 (Pipe Threads)