Service Metal
150# Black Malleable Street 45 Elbows
- SKU:
- SB45STR
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
150# Black Malleable Iron Street 45 Elbow
150# Black Malleable Iron Street 45° Elbows provide a 45-degree directional change with a convenient male x female threaded connection. The street-pattern design allows the male end to thread directly into another fitting, helping eliminate the need for a separate pipe nipple in compact piping assemblies.
Manufactured from durable malleable iron, these Class 150 fittings are designed for dependable service in industrial, commercial, and mechanical piping applications including water, gas, oil, and fire protection systems.
Product Highlights
- 45° street elbow for threaded piping systems
- Male x female NPT threaded connection
- Street pattern can connect directly into another female-threaded fitting
- Helps eliminate a separate pipe nipple in compact installations
- 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
- Manufactured in an ISO-certified facility
- Country of origin: Thailand & China
Technical Specifications
| Product Type | Street 45° Elbow |
|---|---|
| Material | Malleable Iron |
| Finish | Black |
| Pressure Class | 150# |
| Connection Type | Male x Female NPT |
| Pattern | Street |
| Direction Change | 45° |
| 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 strength and durability in threaded piping installations.
Street Pattern
The male x female configuration allows one end of the elbow to thread directly into another female-threaded fitting, reducing the need for additional nipples or adapters.
45° Direction Change
The elbow changes piping direction by 45 degrees, making it useful for compact layouts and installations requiring a less abrupt change than a 90° elbow.
Why Use a Street Elbow?
More Compact Connections
A standard elbow typically has female threads on both ends. A street elbow adds a male-threaded end that can connect directly into another fitting, helping shorten the overall piping assembly.
Fewer Components
Because the male end can thread directly into a compatible female connection, a separate nipple may not be required between fittings.
Typical Applications
Industrial & Mechanical Piping
- Industrial piping systems
- Mechanical piping
- Commercial installations
- Compact threaded assemblies
Common Services
- Water piping
- 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 Service Metal 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 street 45° elbow?
A street 45° elbow changes piping direction by 45 degrees and has a male threaded connection on one end and a female threaded connection on the other.
What is the advantage of a street elbow?
The male end can thread directly into a compatible female-threaded fitting, which can eliminate the need for a separate pipe nipple and create a more compact installation.
How is a street elbow different from a standard 45° elbow?
A standard threaded elbow typically uses female threaded connections on both ends. A street elbow uses a male x female configuration.
What material is this fitting made from?
The fitting is manufactured from malleable iron castings conforming to ASTM A197.
What type of threads does this fitting use?
The fitting uses NPT threads conforming to ASME B1.20.1.
What dimensional standard applies?
Malleable fitting dimensions conform to ASME B16.3.
Is this a Class 150 fitting?
Yes. This is a 150# black malleable iron street elbow.
Is this fitting UL Listed and FM Approved?
Yes. The supplied product information states that the 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.
Important Ordering & Installation Notes
- Confirm the required nominal pipe size before ordering.
- This is a street-pattern elbow with male x female NPT connections.
- The fitting provides a 45° directional change.
- NPT threads conform to ASME B1.20.1.
- Use compatible pipe, fittings, thread sealant, and installation practices for the intended system.
- Verify system pressure, service, applicable codes, and approval requirements before installation.
- Refer to the Service Metal specification sheet and Certificate of Conformance for additional product information.