Choose durability, choose reliability, choose STZ black fittings. Don't settle for less with your home's gas and air infrastructure; STZ black fittings, pipe, and connectors are forged to withstand the test of time. Factory-tested, STZ fittings will provide your home with years of worry-free service.
Anvil International offers the broadest line of Malleable Iron Fitting in galvanized finish. Every fitting is manufactured and tested to meet Anvil strict quality standards. All Anvil Class 150 Malleable Iron Fittings conform to ASME B16.3 and unions conform to ASME B16.39.