Buttweld Lateral Tee
Lateral Tee : Specifications | Materials | Types | Dimensions | Weight Chart | Tolerances | FAQ
Top ASME B16.9 Buttweld Lateral Tee Manufacturer & Exporter – Delivering high-quality Stainless Steel, Carbon Steel, Alloy Steel, and High Nickel Alloy Lateral Tees (Seamless & Welded, SCH 40 / SCH 80) to Canada, Brazil, Netherlands, Singapore, and Mexico.
Best Export Prices: sales@midlandforgefittings.com
As a leading manufacturer and exporter of ASME B16.9 Buttweld Lateral Tees, we pride ourselves on delivering premium quality products that meet stringent industry standards. Our extensive range includes Stainless Steel, Carbon Steel, Alloy Steel, and High Nickel Alloy lateral tees, available in both seamless and welded forms. These lateral tees are designed to provide reliable performance in demanding piping systems, ensuring durability and strength across various applications.
A lateral tee is a specialized type of pipe fitting used to create a branch line at an angle, typically 45 degrees, from the main pipeline. Unlike a standard tee that connects branches at 90 degrees, the lateral tee provides a smoother flow transition and reduces turbulence, making it ideal for systems where minimizing pressure loss and flow disturbance is important.
Choosing us means opting for a manufacturer with decades of experience, advanced production technology, and a dedicated quality control team. We continually invest in R&D to improve our manufacturing processes and expand our product offerings. Partner with us to receive durable, high-performance ASME B16.9 Buttweld Lateral Tees tailored to support your infrastructure’s long-term success.
Lateral Tee Specifications, Sizes & Standards
Buttweld Lateral Tee – Materials, Grades & Standards
| Material Category | Grade | Standards (ASTM / ASME) | Typical Use/Application |
|---|---|---|---|
| Stainless Steel | 304 / 304L / 304H | ASTM A403 WP304/304L/304H | General purpose, corrosion resistance |
| 316 / 316L / 316H | ASTM A403 WP316/316L/316H | Marine & chemical applications | |
| 317 / 317L | ASTM A403 WP317/317L | High corrosion resistance | |
| 321 / 321H | ASTM A403 WP321/321H | High temperature, stabilized | |
| 347 / 347H | ASTM A403 WP347/347H | High-temp pressure systems | |
| 904L | ASTM A403 WP904L / B625 | Acid handling, sulfuric environments | |
| 254 SMO | ASTM A403 / B366 | High chloride environments | |
| Carbon Steel | A234 WPB / WPC | ASTM A234 | Pressure piping & general piping systems |
| A420 WPL6 | ASTM A420 | Low temperature services | |
| Alloy Steel | A234 WP1 / WP5 / WP9 | ASTM A234 | High-temp & pressure pipelines |
| A234 WP11 / WP22 | ASTM A234 | Steam lines & refineries | |
| A234 WP91 | ASTM A234 | Power generation, high performance | |
| Duplex Steel | UNS S31803 / S32205 | ASTM A815 / A790 | Corrosion & high strength use |
| Super Duplex Steel | UNS S32750 / S32760 | ASTM A815 / A790 | Offshore, seawater applications |
| Nickel Alloys | Nickel 200 / 201 | ASTM B366 / B162 | Alkali & chemical processing |
| Inconel 600 / 625 / 718 | ASTM B366 | Heat exchangers, aerospace | |
| Incoloy 800 / 825 | ASTM B366 | Petrochemical & chemical processing | |
| Hastelloy C22 / C276 | ASTM B366 | Severe corrosion resistance | |
| Monel 400 / K500 | ASTM B366 | Seawater, chemical industries | |
| Alloy 20 | ASTM B366 | Sulfuric acid services | |
| Nimonic 75 / 80A | ASTM B366 / B637 | High-temp applications | |
| Copper Nickel | Cu-Ni 90/10 / 70/30 | ASTM B466 / B467 | Marine systems, seawater service |
| Titanium | Grade 2 / Grade 5 | ASTM B363 | Lightweight, corrosion resistance |
| Aluminium | 6061 / 5083 | ASTM B361 | Low-pressure, non-corrosive piping |
Dimensions of Lateral Tee
| Run Diameter (D) | Branch Diameter (d) | Center to End (C) | Overall Length (L) | Wall Thickness (t) | Branch Angle (θ) |
|---|---|---|---|---|---|
| 1/2″ | 1/2″ | 3.50″ | 6.00″ | SCH 40 / SCH 80 | 45° |
| 1″ | 1″ | 4.75″ | 8.00″ | SCH 40 / SCH 80 | 45° |
| 2″ | 2″ | 6.50″ | 11.00″ | SCH 40 / SCH 80 | 45° |
| 4″ | 3″ | 9.50″ | 15.50″ | SCH 40 / SCH 80 | 45° |
| 6″ | 4″ | 11.00″ | 18.50″ | SCH 40 / SCH 80 | 45° |
| 8″ | 6″ | 14.00″ | 22.00″ | SCH 40 / SCH 80 | 45° |
| 10″ | 8″ | 17.50″ | 27.00″ | SCH 40 / SCH 80 | 45° |
Weight Chart: ASME B16.9 Lateral Tee (SCH 40 / STD)
| NPS (inches) | SCH 40 Weight (kg) | SCH 80 Weight (kg) |
|---|---|---|
| 1/2″ | 0.70 | 0.90 |
| 3/4″ | 1.20 | 1.60 |
| 1″ | 2.00 | 2.60 |
| 1 1/4″ | 3.30 | 4.20 |
| 1 1/2″ | 4.20 | 5.60 |
| 2″ | 6.70 | 9.00 |
| 2 1/2″ | 9.50 | 13.00 |
| 3″ | 12.50 | 17.00 |
| 4″ | 19.50 | 27.00 |
| 5″ | 31.00 | 43.00 |
| 6″ | 40.00 | 58.00 |
| 8″ | 68.00 | 98.00 |
| 10″ | 100.00 | 146.00 |
| 12″ | 135.00 | 195.00 |
Buttweld Lateral Tee Tolerances as per ASME B16.9
| Fitting Type | Parameter | Tolerance | |
|---|---|---|---|
| Up to 4” NPS | Above 4” NPS | ||
| Lateral Tee | Outside Diameter at Bevel | ±1.6 mm (1/16″) | ±1.6 mm (1/16″) |
| Center-to-End (A, B) | ±1.6 mm (1/16″) | ±3.2 mm (1/8″) | |
| Wall Thickness | -12.5% (no positive tolerance) | ||
| Ovality | Shall not exceed 1% of specified OD | ||
How does the branch angle of a lateral tee affect fluid dynamics in a piping system?
The branch angle of a lateral tee—commonly 45° or 60°—has a significant impact on fluid flow in a piping system:
-
Reduced Pressure Drop:
- Smaller branch angles allow the fluid to divert more gradually from the main line into the branch line.
- This reduces sudden changes in flow direction, which minimizes pressure losses compared to standard 90° tees.
-
Lower Turbulence:
- A gradual diversion decreases flow separation and turbulence at the junction.
- Less turbulence improves overall flow efficiency and reduces vibration in the system.
-
Erosion Control:
- High-velocity fluids in sharp 90° branches can cause localized erosion at the tee junction.
- A 45° or 60° angle distributes flow more smoothly, reducing wear and extending component lifespan.
-
Applications:
- Lateral tees with optimized branch angles are ideal for critical piping systems in petrochemical plants, refineries, power generation, and chemical processing, where maintaining smooth flow and minimizing energy loss is essential.
In what scenarios are reducing lateral tees preferred over equal lateral tees?
Reducing lateral tees are specifically designed for situations where the branch line diameter is smaller than the main line, offering several advantages:
-
Flow Control:
- Smaller branch diameters help regulate flow rates into secondary lines, making reducing tees ideal for precise distribution of fluids in process systems.
-
System Optimization:
- By matching branch sizes to the required flow, reducing tees improve overall system efficiency and prevent excessive turbulence or pressure drop.
-
Cost Savings:
- Using a smaller branch line reduces material and installation costs, especially in large piping networks.
-
Multi-Stage Processing Plants:
- Reducing lateral tees are common in chemical, petrochemical, or pharmaceutical plants, where different stages require varied pipe sizes for process control.
-
Instrumentation or Service Lines:
- They are often used to connect instrumentation, sampling, or drain lines to the main pipeline without oversizing the branch connection.
Can lateral tees be customized for non-standard branch angles or sizes?
Yes, lateral tees can be customized to meet specific piping system requirements:
-
Non-Standard Branch Angles:
- While typical lateral tees have 45° or 60° branch angles, manufacturers can produce tees with angles ranging from 30° to 90°.
- Custom angles allow the tee to fit unique pipeline geometries or avoid obstacles in tight layouts.
-
Custom Branch Sizes (Reducing Tees):
- Reducing lateral tees can be tailored with specific branch-to-main diameter ratios beyond standard sizes.
- This ensures proper flow distribution and pressure control in multi-stage or complex systems.
-
Material and Pressure Class Customization:
- Manufacturers can also customize the tee material, wall thickness, and pressure rating to match high-pressure, high-temperature, or corrosive service requirements.
-
Applications:
- Custom lateral tees are ideal for industrial piping systems such as chemical processing, petrochemical, power plants, and water treatment facilities where space constraints or special flow requirements exist.