Get top-quality galvanized malleable iron couplings from a trusted provider. Our couplings adhere to ANSI B16.3, ASME B16.3, ANSI B1.20.1, and ASME B1.20.1 standards, featuring Figure 220 design for reliable performance. Available in 4-inch size with a length of 8.5 cm and NPT threads for easy installation.