Galvanized Malleable Iron. Each Fitting Is Individually Flag Tagged. Import. Mueller Logo Cast Into Body Of Each Fitting. 100% Inspected And Quality Tested. All Fittings Meet The Following Specifications: Material: Ansi/Astm A-197 Dimensions: Ansi/Asme B.15.3, B16.14, B16.39. Threads: Ansi B1.20.1.