Black Reducing Pipe Fitting 1 1/2 X 1 Inch. Made of black cast iron. Type: CZ designed for connecting coated elements for the transport of liquids and gases. Cast iron W400-05 or W350-04 with R and Rp thread types. Available in forms: elbows, Ts, crosses, nipples, extensions, reducers, bottles, combinations, and double combinations, as well as caps and...