Service Metal
150# Black Malleable 90° Elbows
- SKU:
- SB90
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
150# Black Malleable Iron 90° Elbow
150# Black Malleable Iron 90° Elbows are designed to provide a full 90-degree directional change in threaded piping systems. Manufactured from durable malleable iron, these fittings deliver dependable strength and long-term performance across industrial, commercial, plumbing, mechanical, gas, oil, and fire protection applications.
The female NPT threaded connections make these elbows easy to integrate into standard threaded piping layouts, while recognized ASTM and ASME standards help ensure dimensional consistency and compatibility.
Product Highlights
- 90° threaded elbow for directional changes in piping systems
- Durable black malleable iron construction
- Class 150 fitting
- Malleable castings conform to ASTM A197
- Fitting dimensions conform to ASME B16.3
- NPT threads conform to ASME B1.20.1
- Class 150 fittings are UL Listed and FM Approved at 300 PSI
- Designed for industrial, commercial, plumbing, and mechanical piping systems
- Manufactured in an ISO-certified facility
- Country of origin: Thailand & China
Technical Specifications
| Product Type | 90° Elbow |
|---|---|
| Material | Malleable Iron |
| Finish | Black |
| Pressure Class | 150# |
| Connection Type | Female NPT Threaded |
| Direction Change | 90° |
| Casting Standard | ASTM A197 |
| Dimensional Standard | ASME B16.3 |
| Thread Standard | ASME B1.20.1 |
| Listings / Approvals | UL Listed & FM Approved at 300 PSI |
| Manufacturing | ISO-Certified Facility |
| Country of Origin | Thailand & China |
Construction & Applications
Malleable Iron Construction
Manufactured from malleable iron castings conforming to ASTM A197 for dependable mechanical strength and durability in threaded piping installations.
90° Direction Change
The elbow creates a full right-angle turn in the piping run, making it a standard choice where a compact 90-degree change in direction is required.
Standard NPT Threads
NPT threaded connections conform to ASME B1.20.1 for compatibility with properly sized threaded pipe and fittings.
Typical Applications
Industrial & Mechanical Piping
- Industrial piping systems
- Mechanical piping
- Commercial installations
- General threaded piping
Common Services
- Plumbing systems
- Gas piping
- Oil piping
- Fire protection systems

Ask Willy: Need Pipe Size Help?
Use our common pipe diameters and wall thickness chart to confirm sizing before ordering malleable iron fittings. You can also review the specification sheet and Certificate of Conformance below.
Standards & Approvals
ASTM A197
Malleable iron castings conform to ASTM A197.
ASME Standards
Fitting dimensions conform to ASME B16.3, while NPT threads conform to ASME B1.20.1.
UL & FM
Class 150 fittings are UL Listed and FM Approved at 300 PSI.
Need More Black Malleable Iron Fittings?
Shop our complete selection of 150# black malleable iron fittings, including tees, elbows, street elbows, couplings, bushings, and other threaded fittings for industrial and commercial piping systems.
Frequently Asked Questions
What is a 90° malleable iron elbow used for?
A 90° elbow changes the direction of a threaded piping system by 90 degrees and is commonly used to create right-angle piping layouts.
What material is this fitting made from?
The fitting is manufactured from malleable iron castings conforming to ASTM A197.
What type of threads does the elbow use?
The elbow uses NPT threads conforming to ASME B1.20.1.
What dimensional standard applies to this fitting?
Malleable fitting dimensions conform to ASME B16.3.
Is this a Class 150 fitting?
Yes. This is a 150# black malleable iron fitting.
Is this fitting UL Listed and FM Approved?
Yes. The supplied product information states that Class 150 fittings are UL Listed and FM Approved at 300 PSI.
Where are these fittings manufactured?
The listed countries of origin are Thailand and China, and the manufacturing facility is ISO certified.
Where can I confirm pipe dimensions before ordering?
Use the Common Pipe Diameters and Wall Thickness chart in the Ask Willy section above to verify sizing before ordering.
Important Ordering & Installation Notes
- Confirm the required nominal pipe size before ordering.
- This fitting provides a 90° directional change.
- Connections are female NPT threaded and conform to ASME B1.20.1.
- Use compatible pipe, fittings, thread sealant, and installation practices for the intended system.
- Verify system pressure, service, code, and approval requirements before installation.
- Refer to the specification sheet and Certificate of Conformance for additional product information.