Service Metal
Carbon Steel Weld Reducing 90 Elbow Long Radius
- SKU:
- SR90
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
Standard Carbon Steel Weld Reducing 90° Elbow Long Radius
Standard Carbon Steel Weld Reducing 90° Long Radius Elbows are designed to change the direction of a piping system by 90 degrees while transitioning between two different pipe sizes in a single fitting.
The long radius configuration provides a broader, more gradual flow path than a short radius elbow while the reducing design eliminates the need for a separate reducer. Manufactured from durable carbon steel, these butt weld reducing elbows provide a permanent welded connection for industrial, commercial, mechanical, and process piping applications.
Product Highlights
- Standard carbon steel reducing 90° butt weld elbow
- Changes piping direction by 90°
- Transitions between two different pipe sizes in one fitting
- Long radius configuration provides a gradual directional change
- Combines the function of an elbow and reducer
- Provides a permanent welded connection
- Standard wall configuration
- Seamless butt weld fittings conform to ASTM A/SA234 WPB through 24"
- Weld fitting dimensions conform to ASME/ANSI B16.9, B16.11, and B16.28 through 24"
- Weld fitting dimensions larger than 24" conform to MSS-SP-48
- Carbon content not to exceed 0.25% maximum
- Manufacturing facilities are ISO certified
- Mill Test Reports available with every order
Technical Specifications
| Product Type | Reducing 90° Weld Elbow |
|---|---|
| Material | Carbon Steel |
| Connection Type | Butt Weld |
| Elbow Angle | 90° |
| Radius Type | Long Radius |
| Wall Type | Standard |
| Configuration | 90° Direction Change with Pipe Size Reduction |
| Primary Function | Change Direction and Reduce Pipe Size |
| Material Specification | ASTM A/SA234 WPB through 24" |
| Dimensional Standards | ASME/ANSI B16.9, B16.11, and B16.28 through 24" |
| Dimensions Over 24" | MSS-SP-48 |
| Maximum Carbon Content | 0.25% |
| Manufacturing | ISO-Certified Facilities |
| Material Documentation | Mill Test Reports Available with Every Order |
Reducing Elbow Configuration
90° Direction Change
The elbow redirects the piping system through a right-angle turn.
Long Radius Design
The broader bend profile provides a more gradual directional transition than a short radius elbow.
Integrated Size Reduction
The two butt weld ends are different nominal sizes, allowing the fitting to change direction and reduce pipe size at the same location.
Construction Details
Standard carbon steel weld reducing 90° long radius elbows are designed for installation between compatible butt weld pipes of different diameters. Welding both ends into the system creates a permanent directional and size-transition connection without threaded or mechanical joints.
By combining a long radius elbow and pipe-size reduction into a single fitting, the reducing elbow can simplify piping layouts and reduce the number of separate welded components required.
Why Choose a Reducing 90° Elbow?
Two Functions in One Fitting
- Changes pipe direction by 90°
- Transitions between different nominal pipe sizes
- Eliminates the need for a separate reducer at the turn
- Helps reduce the number of fittings in the piping assembly
- Supports compact and efficient system design
Long Radius Welded Connection
- Provides a broader directional transition
- Designed for compatible butt weld piping
- No threaded connection required
- Suitable for industrial and mechanical piping systems
- Supports fabricated piping assemblies
Reducing Elbow vs. Separate Elbow & Reducer
Reducing Elbow
A reducing elbow combines the 90-degree directional change and pipe-size transition into a single fitting, helping reduce the number of individual components and welded joints required.
Separate Elbow & Reducer
A conventional layout can use a standard elbow followed by a separate reducer, which requires additional space, another fitting, and additional weld preparation.
Typical Applications
Industrial & Mechanical Piping
- Industrial process piping
- Mechanical piping systems
- Plant utility piping
- Equipment connections
- Fabricated piping assemblies
Directional Size Transitions
- Distribution piping
- Equipment inlet and outlet piping
- Commercial mechanical systems
- Pipe-size transitions at directional changes
- General carbon steel piping systems
Standard Wall Construction
Standard Wall
This listing is for the Standard wall configuration. Confirm both nominal pipe sizes and the required wall thickness before ordering to ensure compatibility with the adjoining piping system.

Ask Willy: Need Pipe Size Help?
Use our common pipe diameters and wall thickness chart to confirm both connection sizes before ordering Standard Carbon Steel Weld Reducing 90° Long Radius Elbows. You can also review the reducing elbow dimensional sheet below.
Standards & Documentation
ASTM Material Standard
Seamless butt weld fittings conform to ASTM A/SA234 WPB through 24".
Dimensional Standards
Weld fitting dimensions conform to ASME/ANSI B16.9, B16.11, and B16.28 through 24". Dimensions larger than 24" conform to MSS-SP-48.
Material Traceability
Mill Test Reports are available with every order, providing supporting material documentation for applicable project requirements.
Need More Carbon Steel Weld Fittings?
Browse our complete selection of carbon steel weld fittings, including reducing elbows, long radius elbows, short radius elbows, tees, reducers, laterals, caps, return bends, and other butt weld fittings.
Frequently Asked Questions
What is a reducing 90-degree weld elbow?
A reducing 90° weld elbow is a butt weld fitting that changes piping direction by 90 degrees while connecting two different nominal pipe sizes.
What does long radius mean?
Long radius refers to a broader bend configuration that provides a more gradual directional transition than a short radius elbow.
Why use a reducing elbow instead of a separate elbow and reducer?
A reducing elbow combines both functions into one fitting, which can reduce the number of components, welded joints, and installation space required.
Is this listing for Standard wall?
Yes. This listing is specifically for the Standard wall Carbon Steel Weld Reducing 90° Long Radius Elbow.
What type of connection does this fitting use?
This fitting uses butt weld connections and is welded to compatible carbon steel pipe or piping components.
What material specification applies?
Seamless butt weld fittings conform to ASTM A/SA234 WPB through 24".
What dimensional standards apply?
The supplied information states that weld fitting dimensions conform to ASME/ANSI B16.9, B16.11, and B16.28 through 24", with fittings larger than 24" conforming to MSS-SP-48.
What is the maximum carbon content?
The supplied product information states that carbon content does not exceed 0.25% maximum.
Are Mill Test Reports available?
Yes. Mill Test Reports are available with every order according to the supplied product information.
What should I verify before ordering?
Confirm both nominal connection sizes, Standard wall compatibility, long radius configuration, material requirements, and applicable piping-system specifications before ordering.
Important Ordering & Installation Notes
- Confirm both nominal connection sizes before ordering.
- This listing is for Standard wall reducing 90° long radius elbows.
- Confirm that a long radius reducing elbow is appropriate for the intended piping layout.
- This fitting uses butt weld connections.
- Verify both adjoining pipe sizes and wall thicknesses for compatibility.
- Allow sufficient installation space for the long radius bend profile.
- Verify carbon steel compatibility with the intended piping service.
- Confirm applicable pressure, temperature, dimensional, and project requirements.
- Use qualified welding procedures and personnel as required by the applicable piping code or project specification.
- Inspect fitting ends and adjoining pipe before fit-up and welding.
- Confirm proper alignment before completing the welded connections.
- Mill Test Reports are available with every order.
- Refer to the dimensional PDF for fitting-specific measurements before fabrication.