90 Degree Equal Butt Weld Tee
90 Degree Equal Butt Weld Tee | SSM
SSM is a trusted global manufacturer and supplier of 90 Degree Equal Butt Weld Tees, designed for reliable branch connections, smooth fluid distribution, and long-term performance in industrial piping systems.
The 90 Degree Equal Butt Weld Tee is a seamless or welded pipe fitting used to create a 90-degree branch connection where the run pipe diameter and branch pipe diameter are the same. Manufactured according to international standards, it provides excellent strength, dimensional accuracy, and flow efficiency for demanding applications in oil & gas, petrochemical, chemical, power generation, and water treatment industries.
1. Product Overview
The 90 Degree Equal Butt Weld Tee is designed to connect three sections of piping with the same nominal diameter. The fitting has two straight ends aligned with the main pipeline and one branch outlet positioned at 90 degrees, allowing efficient fluid distribution or collection.
Compared with threaded or socket weld fittings, butt weld tees provide a permanent welded connection with excellent pressure resistance and reduced turbulence. They are widely used in large-diameter and high-pressure piping systems.
Product Specifications:
| Item | Specification |
|---|---|
| Standard | ASME B16.9 / ASTM A234 / MSS SP-75 / Custom |
| Material | Carbon Steel / Stainless Steel / Alloy Steel |
| Fitting Type | Equal Butt Weld Tee |
| Branch Angle | 90 Degree |
| Connection Type | Butt Weld Ends |
| Size Range | 1/2" – 48" (DN15 – DN1200) |
| Wall Thickness | SCH 5S – SCH XXS / Custom |
| Manufacturing Process | Seamless / Welded / Hot Forming |
| Applications | Oil & Gas, Petrochemical, Chemical, Power, Water Systems |
2. Material Properties
90 Degree Equal Butt Weld Tees are available in various materials depending on service conditions, temperature, and corrosion requirements.
Common Stainless Steel Grade (SS316/316L) Composition
| Element | Content (%) |
|---|---|
| Chromium (Cr) | 16–18 |
| Nickel (Ni) | 10–14 |
| Molybdenum (Mo) | 2–3 |
| Carbon (C) | ≤0.03 (316L) |
| Manganese (Mn) | ≤2.0 |
| Silicon (Si) | ≤1.0 |
Common Carbon Steel Grade (ASTM A234 WPB)
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤0.30 |
| Manganese (Mn) | ≤1.60 |
| Silicon (Si) | ≤0.40 |
| Phosphorus (P) | ≤0.035 |
| Sulfur (S) | ≤0.040 |
Material options provide:
Excellent mechanical strength
Reliable pressure-bearing capability
Good weldability
Resistance to corrosion and high-temperature service (depending on material grade)
3. Mechanical Properties (Typical)
ASTM A234 WPB Carbon Steel
| Property | Value |
|---|---|
| Tensile Strength | ≥415 MPa |
| Yield Strength | ≥240 MPa |
| Elongation | ≥22% |
| Hardness | ≤197 HB |
Stainless Steel 316L
| Property | Value |
|---|---|
| Tensile Strength | ≥485 MPa |
| Yield Strength | ≥170 MPa |
| Elongation | ≥40% |
| Hardness | ≤95 HRB |
4. Key Features
✅ Equal Diameter Branch Design
The main pipe and branch outlet have the same diameter, providing balanced flow distribution in piping systems.
✅ Butt Weld Connection
Provides a strong permanent joint with excellent pressure resistance and reduced risk of leakage compared with threaded connections.
✅ Smooth Internal Flow Path
The curved design minimizes turbulence, pressure loss, and flow resistance.
✅ Wide Material Availability
Available in carbon steel, stainless steel, duplex steel, and alloy steel to meet different operating conditions.
✅ International Standard Compliance
Manufactured according to ASME B16.9, ASTM A234, MSS SP-75, and customer specifications.
5. Advantages and Limitations
Advantages:
High structural strength and reliability
Suitable for high-pressure and high-temperature applications
Provides smooth fluid flow and reduced turbulence
Excellent weldability and system integrity
Available in various sizes, schedules, and materials
Suitable for large-scale industrial piping projects
Limitations:
Requires professional welding during installation
Installation time is longer compared with threaded fittings
Requires proper welding inspection and quality control
6. Applications
Oil & Gas Pipelines
Used for pipeline branching, gathering systems, and transmission lines.
Petrochemical Plants
Applied in process piping, reactors, storage systems, and chemical transportation lines.
Power Generation Facilities
Used in steam, cooling water, and utility piping systems.
Chemical Processing Industry
Suitable for corrosive fluid transportation with appropriate material selection.
Water Treatment Systems
Used in water distribution, filtration, and industrial water pipelines.
Shipbuilding and Offshore Engineering
Applied in seawater, fuel, and process piping systems.
7. Why Choose SSM
30+ years of experience in butt weld fitting manufacturing
Professional production of elbows, tees, reducers, and custom fittings
Materials available in carbon steel, stainless steel, alloy steel, and duplex steel
Compliance with ASME B16.9, ASTM A234, MSS SP-75, and international standards
Advanced forming, machining, heat treatment, and inspection facilities
Dimensional inspection, PMI testing, hydrostatic testing, and NDT services available
OEM manufacturing and customized solutions supported
Reliable worldwide delivery for industrial projects
8. Conclusion
The SSM 90 Degree Equal Butt Weld Tee is a high-quality piping component designed for efficient branch connections, excellent mechanical performance, and long-term reliability.
With precision manufacturing, superior material options, and compliance with international standards, it is widely used in oil & gas, petrochemical, chemical, power generation, marine, and industrial piping systems.
SSM supplies premium-quality 90 Degree Equal Butt Weld Tees with customized sizes, wall thicknesses, materials, and inspection requirements to support global engineering projects.
📩 Contact SSM today for quotation and technical support for your butt weld tee requirements.
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