What is Mallebale iron pipe fitting

Malleable iron fittings are lighter fittings in 150# and 300# pressure class. They are made for light industrial and plumbing use up to 300 psi. Malleable iron fittings, also called black iron fittings, are available up to 6 inch nominal pipe size, though they are more common to 4 inches.

Black pipe fittings, also called black malleable iron fittings, are used to transport gas and water

Malleable iron cannot be successfully fusion welded and retain its unique properties; to put it another way, you can weld malleable iron as easily as you can weld gray iron, but in the act of welding you will convert some of the malleable iron casting into a gray iron casting.

• Meets or exceeds all applicable ASTM and ANSI standards
• Stocked from 1/8″ through 6″ diameters
• 100% pressure tested before leaving the factory
• UL and FM approvals on Chinese Malleable fittings