In complex piping systems, reducing branch connections are essential when a smaller outlet is required from a larger run pipe. The reducing butt weld branch outlet, manufactured in accordance with MSS SP-97, provides a strong, efficient, and space-saving solution for such applications.
Haihao Group supplies high-quality forged reducing branch outlet fittings designed for durability, smooth flow transition, and long-term reliability in demanding industrial environments.
What Is a Reducing Butt Weld Branch Outlet?
A reducing butt weld branch outlet is a forged fitting used to connect a smaller branch pipe to a larger main pipeline at a 90-degree angle. The outlet end is beveled, allowing it to be welded directly to the branch pipe, while the base is contoured to fit the curvature of the run pipe.
Unlike equal-size branch fittings, reducing types are specifically engineered to handle size transitions without compromising strength or flow efficiency.
Key Features and Engineering Advantages
Optimized Stress Distribution
The integrally reinforced design helps reduce stress concentration at the branch connection, improving overall system safety.
Smooth Flow Transition
The gradual internal contour minimizes turbulence and pressure drop when fluid moves from the main pipe to the smaller branch.
Strong Welded Connection
Butt welding ensures a permanent and leak-resistant joint, suitable for high-pressure and high-temperature systems.
Space-Saving Design
Compared with traditional tees, reducing branch outlet fittings require less installation space and material.
Standard Compliance
All products are manufactured according to MSS SP-97, ensuring dimensional accuracy and compatibility.
Dimensional Specifications (STD & XS)
Haihao Group provides a complete range of reducing branch outlet fittings in standard (STD) and extra strong (XS) wall thicknesses.
MSS SP-97 Reducing Butt Weld Branch Outlet Drawing
| pressure | NPS | A | B | C |
| STD | 1/2″ | 19.05 | 34.93 | 23.81 |
| STD | 3/4″ | 22.23 | 44.45 | 30.16 |
| STD | 1″ | 26.99 | 53.98 | 36.51 |
| STD | 1 1/4″ | 31.75 | 65.09 | 44.45 |
| STD | 1 1/2″ | 33.34 | 73 | 50.8 |
| STD | 2″ | 38.1 | 88.9 | 65.09 |
| STD | 2 1/2″ | 41.28 | 103.19 | 76.2 |
| STD | 3″ | 44.45 | 122.24 | 93.66 |
| STD | 3 1/2″ | 47.63 | 142.88 | 101.6 |
| STD | 4″ | 50.8 | 152.4 | 120.65 |
| STD | 5″ | 57.15 | 179.39 | 141.29 |
| STD | 6″ | 60.3 | 215.9 | 169.86 |
| STD | 8″ | 69.85 | 263.53 | 220.66 |
| STD | 10″ | 77.79 | 322.26 | 274.64 |
| STD | 12″ | 85.73 | 377.83 | 325.44 |
| STD | 14″ | 88.9 | 409.58 | 357.19 |
| STD | 16″ | 93.66 | 463.55 | 407.99 |
| STD | 18″ | 96.84 | 520.7 | 458.79 |
| STD | 20″ | 101.6 | 571.5 | 508 |
| STD | 24″ | 115.89 | 688.98 | 614.36 |
| XS | 1/2″ | 19.05 | 34.93 | 23.81 |
| XS | 3/4″ | 22.23 | 44.45 | 30.16 |
| XS | 1″ | 26.99 | 53.98 | 36.51 |
| XS | 1 1/4″ | 31.75 | 65.09 | 44.45 |
| XS | 1 1/2″ | 33.34 | 73 | 50.8 |
| XS | 2″ | 38.1 | 88.9 | 65.09 |
| XS | 2 1/2″ | 41.28 | 103.19 | 76.2 |
| XS | 3″ | 44.45 | 122.24 | 93.66 |
| XS | 3 1/2″ | 47.63 | 136.53 | 101.6 |
| XS | 4″ | 50.8 | 152.4 | 120.65 |
| XS | 5″ | 57.15 | 179.39 | 141.29 |
| XS | 6″ | 77.79 | 225.43 | 169.86 |
| XS | 8″ | 98.43 | 292.1 | 220.66 |
| XS | 10″ | 93.66 | 323.9 | 265.11 |
| XS | 12″ | 103.19 | 379.41 | 317.5 |
| XS | 14″ | 100.01 | 431.8 | 350.84 |
| XS | 16″ | 106.36 | 466.73 | 403.23 |
| XS | 18″ | 111.13 | 517.53 | 439.74 |
| XS | 20″ | 119.06 | 582.61 | 509.59 |
| XS | 24″ | 139.7 | 708.03 | 614.36 |
Materials and Manufacturing
Haihao Group manufactures reducing branch outlet fittings using high-grade forged materials:
- Carbon steel (ASTM A105)
- Stainless steel (ASTM A182 F304 / F316)
- Duplex and alloy steels for corrosive or high-temperature service
Each fitting is produced under strict quality control, including dimensional inspection, mechanical testing, and non-destructive examination.
Applications Across Industries
Reducing butt weld branch outlet fittings are widely used in:
- Oil and gas transmission systems
- Petrochemical processing plants
- Power generation facilities
- Offshore platforms
- Industrial fluid handling systems
They are particularly suitable for applications where pipeline size reduction is required without sacrificing strength.
Why Choose Haihao Group?
Haihao Group has extensive experience in manufacturing forged piping components for international markets. We provide:
- Stable quality with full traceability
- Competitive pricing and flexible production
- Fast delivery for urgent projects
- Technical support and customization services
Our products are trusted by clients worldwide for critical pipeline applications.
Reducing butt weld branch outlet fittings manufactured to MSS SP-97 offer an efficient and reliable solution for creating smaller branch connections from larger pipelines. With strong reinforcement, smooth flow characteristics, and robust construction, they are essential components in modern piping systems.
Haihao Group is committed to delivering high-performance fittings that meet global standards and support long-term project success.
FAQ
Q1: What is a reducing branch outlet fitting?
It is a forged fitting used to connect a smaller branch pipe to a larger main pipe with a reinforced welded connection.
Q2: What standard do these fittings follow?
They are manufactured according to MSS SP-97.
Q3: What is the advantage over traditional tees?
They provide better stress distribution, require less space, and reduce material usage.
Q4: What materials are available?
Carbon steel, stainless steel, and alloy steel are commonly used depending on application requirements.
Q5: Where are reducing branch outlet fittings used?
They are widely applied in oil & gas, petrochemical, power generation, and industrial piping systems.
