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The Buttweld Lateral Tee Weight Chart is a highly useful technical guide that should be used by buyers, engineers, and the procurement people who are dealing with industrial piping systems. Due to the accurate data about the dimensions, wall thickness, and weight, the selection of materials and the calculation of loads are done correctly, safe installation is performed, and the international piping standards are adhered to.
This manual has a comprehensive Buttweld Lateral Tee Weight Chart in KG and MM and dimensional tolerances, angularity provisions, and product availability in a clear and easy to use manner.
What Is a Buttweld Lateral Tee?
A buttweld lateral tee is a pipe fitting that is used to join a branch line to the main pipeline at 45 degrees. This design offers reduced flow direction as opposed to conventional straight tees and averts the turbulence, erosion and pressure drop. Buttweld lateral tees find application in oil and gas, petrochemical, power generation, chemical processing and heavy industrial piping systems.
Key Features of Buttweld Lateral Tees
45-degree Branch connection. Smooth directional flow has been enabled and turbulence and erosion minimized.
High Mechanical Strength: This is designed to resist high pressure and temperature environment.
Large Selection of Materials: Carbon steel, stainless steel, alloy steel, duplex steel, and special alloys.
Excellent Weldability: Provides strong, leak-proof joints for long service life.
Compliance with International Standards: Manufactured as per ASME, ASTM, and other global specifications.
Materials & Grades Commonly Used
- Carbon Steel: ASTM A234 WPB, WPC
- Stainless Steel: ASTM A403 WP304, WP304L, WP316, WP316L
- Alloy Steel: ASTM A234 WP1, WP5, WP9, WP11, WP22
- Duplex & Super Duplex Steel
- Nickel Alloys (Inconel, Monel, Hastelloy)
ASME B16.9 Lateral Tee Dimensions
| Nominal Pipe Size | OutsideDiameter OD | TYPE | X – S | STD | ||||||
| E & L | D | T | ID | E & L | D | T | ID | |||
| 11¼1½ | 1.3151.6601.900 | BBB | 6.507.258.50 | 2.002.252.50 | 0.1790.1910.200 | 0.9571.2781.500 | 5.756.257.00 | 1.751.752.00 | 0.1330.1400.145 | 1.0491.3801.610 |
| 22½3 | 2.3752.8753.500 | A/BBB | *8.00**9.0010.5011.00 | 2.502.503.00 | 0.1280.2760.300 | 1.9392.3232.900 | 8.009.5010.00 | 2.502.503.00 | 0.1540.2030.216 | 2.0672.4693.068 |
| 3½45 | 4.0004.5005.562 | BA/BB | 12.50*12.00**13.5015.00 | 3.003.003.50 | 0.3180.3370.375 | 3.3643.8264.813 | 11.5012.0013.50 | 3.003.003.50 | 0.2260.2370.258 | 3.5484.0265.047 |
| 6810 | 6.6258.62510.750 | A/BBB | *14.50**17.5020.5024.00 | *3.50**4.005.005.50 | 0.4320.5000.500 | 5.7617.6259.750 | 14.5017.5020.50 | 3.504.505.00 | 0.2800.3220.365 | 6.0657.98110.020 |
| 121416 | 12.75014.00016.000 | BBB | 27.5031.0034.50 | 6.006.507.50 | 0.5000.5000.500 | 11.75013.00015.000 | 24.5027.0030.00 | 5.506.006.50 | 0.3750.3750.375 | 12.00013.25015.250 |
| 182024 | 18.00020.00024.000 | BBB | 37.5040.5047.50 | 8.008.5010.00 | 0.5000.5000.500 | 17.00019.00023.000 | 32.0035.0040.50 | 7.008.009.00 | 0.3750.3750.375 | 17.25019.25023.250 |
ASME B16.9 Butt Welding Lateral Tee Weight Calculator
| DN | NPS | STD | XS | XXS | 40 | 80 | 160 |
| 40 | 1 1/2 | 0.9 | 1.3 | 1.3 | 0.9 | 1.3 | 1.5 |
| 50 | 2 | 1.5 | 2.2 | 3.4 | 1.5 | 2.2 | 2.7 |
| 65 | 2 1/2 | 2.7 | 3.0 | 3.8 | 2.7 | 3.0 | 3.1 |
| 80 | 3 | 3.8 | 4.4 | 6.1 | 3.8 | 4.4 | 5.6 |
| 90 | 3 1/2 | 4.6 | 5.9 | 4.6 | 5.9 | ||
| 100 | 4 | 6.5 | 7.7 | 12.9 | 6.5 | 7.7 | 10.2 |
| 15 | 1/2 | 0.21 | 0.2 | 0.2 | 0.2 | ||
| 20 | 3/4 | 0.2 | 0.3 | 0.2 | 0.3 | ||
| 25 | 1 | 0.3 | 0.5 | 0.3 | 0.5 | ||
| 32 | 1 1/4 | 0.6 | 0.7 | 0.6 | 0.7 | ||
| 125 | 5 | 9.7 | 13.5 | 25.7 | 9.7 | 13.5 | 19.8 |
| 150 | 6 | 14 | 19.3 | 30.6 | 14 | 19.3 | 34 |
| 200 | 8 | 24.5 | 34.5 | 47.7 | 24.5 | 34.5 | 50 |
| 250 | 10 | 41.3 | 58.4 | 84.7 | 41.3 | 67.5 | 111.2 |
| 300 | 12 | 65 | 76.5 | 129 | 69 | 105 | 158 |
| 350 | 14 | 83 | 104 | 96 | 142 | 232 | |
| 400 | 16 | 110 | 120 | 120 | 187 | 335 | |
| 450 | 18 | 132 | 159 | 170 | 263 | 564 | |
| 500 | 20 | 168 | 192 | 240 | 356 | 756 | |
| 550 | 22 | 185 | 209 | 416 | 1002 | ||
| 600 | 24 | 222 | 251 | 345 | 548 | 1215 |
Importance of Buttweld Lateral Tee Weight Chart
The Buttweld Lateral Tee Weight Chart allows calculation of the loads and quantities of materials of the piping correctly. It facilitates improved planning of transportation, storage and installation. As big projects can have thousands of fittings, the slightest change of weight can greatly affect logistics and budgeting. The engineers also use these charts to ensure that the project is within the specifications and international standards.
Applications of Buttweld Lateral Tees
- Oil & gas pipelines
- Petrochemical and chemical plants
- Power generation facilities
- Refineries and processing units
- Shipbuilding and offshore structures
- Water treatment and desalination plants
Advantages of Using Buttweld Lateral Tees
- Smooth flow characteristics
- High pressure and temperature resistance
- Long service life
- Strong, leak-proof joints
- Reduced maintenance requirements
How to Use the Weight Chart Correctly
To achieve accurate results:
- Identify the Nominal Pipe Size (NPS).
- Confirm the schedule or wall thickness.
- Select the required material grade.
- Refer to the appropriate weight chart.
- Verify compliance with ASME B16.9 / ASTM standards.
For non-standard thicknesses or special alloys, confirm exact weight with the manufacturer.
Conclusion
The lateral tees of the piping systems are the Buttweld, which are essential in contemporary piping systems as they are strong, reliable, and direct the flow effectively. With reference to the correct Buttweld Lateral Tee Weight Chart of various schedules, the engineers and procurement section would be able to choose the correct fitting to fit each application, which ensures safety, performance and cost efficiency of the industrial projects.