1 inch Black Iron 45 Degree Elbow Female x Female

45° Black Malleable Iron Elbow – Built for High-Integrity Piping Transitions

The 45-degree black malleable iron (BLK MAL) elbow is a dependable component for joining threaded steel pipe systems where directional change is required. Designed for use in natural gas, steam, air, and oil systems, this fitting supports angular pipe runs while maintaining mechanical strength and pressure integrity. Its malleable iron construction allows for exceptional tensile strength and dimensional accuracy, even in demanding environments.

Technical and Performance Characteristics

• Material: Malleable iron, ASTM A197
• Finish: Black (non-galvanized)
• Connection Type: Female National Pipe Thread (NPT), ANSI B1.20.1
• Angle: 45 degrees
• Pressure Class: Rated for steam up to 150 psi and air/gas/oil up to 300 psi (Class 150 fitting)

Application Benefits

• Resilient Thread Engagement: Threads are formed for precision fit, reducing risk of leakage under pressure.
• Durability Under Load: Heat-treated construction resists cracking under mechanical stress.
• Internal and External Coating: Black iron surface suitable for oil and gas lines; internal coating not required in non-corrosive applications.
• Thread Seal Compatibility: Use with approved pipe joint compound or PTFE tape for pressure sealing.

Installation Considerations

Use standard pipe wrenches to torque the fitting into the adjoining pipe. Ensure pipe threads are properly cleaned and sealed. Over-tightening should be avoided to prevent thread deformation. For optimal alignment, use in systems that permit a 45° offset for directional routing.

Use Cases

Commonly used in natural gas, compressed air, low-pressure steam, and hydronic heating systems where a 45° redirection is preferred over a sharper 90° elbow. Suitable for use in both vertical and horizontal pipe runs within commercial and residential mechanical systems.

Did You Know?

Malleable iron undergoes an annealing process that makes it more ductile and less brittle than cast iron, offering increased impact resistance while maintaining its threaded integrity under dynamic loads.

For pipe routing that demands precision and durability, the 45° Black Malleable Iron Elbow delivers structural reliability and pressure performance. Ideal for any threaded black pipe installation requiring angular transitions.