Union,3/4 In,NPT,Black Malleable Iron 1.Banded,Beaded,Plain 2.1/8-6" 3.Connection:NPT ... thread 4.Heavy/Standard/light weight Union, 3/4 In, NPT, Black ... Malleable Iron Specification:Union, 3/4 In,Connection NPT threads, ... : ANSI/ASME/A197-79Dimensions: ANSI/ASME B16.3-85Threads: ANSI/ASME B1.20.1Mechanical properties:Tensile ...