ASC Anvil 1/4"x1/8" Galvanized Reducing Pipe Coupling. It is made of durable malleable iron with a galvanized finish for corrosion resistance. This coupling is designed to connect two pipes of different diameters, ensuring a secure and leak-free connection. Anvil International provides a wide range of malleable iron fittings, all manufactured and tested to meet strict quality standards. Conforming to ASME B16.3 and B16.39, these fittings are suitable for water and oil applications. Elbows and tees 3/8 inch (10 DN) and larger undergo 100 percent gas testing at a minimum of 100 PSI (6.9 bar).