Black Iron Fittings Schedule 40

Black Iron Fittings Schedule 40 are heavy-duty malleable iron pipe fittings manufactured to Schedule 40 wall thickness specifications, providing exceptional strength and pressure resistance for demanding industrial and commercial piping applications. The black iron finish — a result of the iron oxide coating applied during manufacturing — offers moderate corrosion resistance and distinguishes them from galvanized fittings, making them the preferred choice for gas distribution, steam, and fire sprinkler systems where galvanized coatings may be unsuitable. Available in a comprehensive range of fitting types including elbows (90° and 45°), tees, couplings, unions, reducers, caps, nipples, and crosses, in sizes ranging from 1/4" to 6" with NPT threaded connections for straightforward installation. Schedule 40 wall thickness ensures compliance with ANSI/ASME B16.3 standards for malleable iron threaded fittings, providing rated working pressures suitable for natural gas lines, LPG distribution, steam heating systems, fire protection sprinkler networks, and industrial compressed air systems. Not recommended for potable water supply or outdoor exposed installations without additional corrosion protection.