Stainless Steel Socket Weld Flanges Weight Chart: Sizes, Pressure Classes, and Usage
February 9, 2026
Complete Guide to Buttweld Swage Nipple with Weight Chart in MM and kg
February 10, 2026
In piping systems, accuracy matters a lot. One small mistake in fitting size or weight can affect installation, cost, and performance. This is why a Buttweld Equal Tee Weight Chart is an important reference for engineers, fabricators, and buyers. It helps users understand the exact weight and dimensions of equal tees before selection and installation.
A buttweld equal tee is used when the branch pipe and main pipe are of the same diameter. These fittings are commonly used in oil & gas, petrochemical, power plants, water pipelines, and industrial piping systems.
What Is a Buttweld Equal Tee?
All the three ends are butt welded, and it provides a strong and leak-free joint. Distribution of flow is also balanced due to the equality of all sides hence it is best in high pressure high temperature application.
These tees are produced in accordance with the international standards and are obtained in different schedules and wall thicknesses. In order to handle such variations conveniently, specialists use a weight chart.
Why Is a Buttweld Equal Tee Weight Chart Important?
A Buttweld Equal Tee Weight Chart in Kg helps calculate the total weight of a piping system. This is especially important for:
- Estimating material cost
- Planning transportation and handling
- Designing pipe supports and structures
- Avoiding overloading during installation
Knowing the exact weight reduces guesswork and helps in better project planning.
Buttweld Equal Tee Material Properties Table
| Grades | Density (g/cm³) | Melting Point (°C) | Thermal Conductivity (W/m·K) | Electrical Resistivity (µΩ·cm) | Coefficient of Thermal Expansion (μm/m·°C) |
| SS 304 | 7.93 | 1400 – 1450 | 16.2 | 72.0 | 17.2 |
| SS 304L | 7.93 | 1400 – 1450 | 16.2 | 72.3 | 16.0 |
| SS 304H | 7.93 | 1400 – 1450 | 16.2 | 72.3 | 16.0 |
| SS 310 | 7.90 | 1400 – 1450 | 14.0 | 72.0 | 17.0 |
| SS 310S | 7.90 | 1400 – 1450 | 14.0 | 72.0 | 17.0 |
| SS 316 | 7.98 | 1375 – 1400 | 16.3 | 74.0 | 16.5 |
| SS 316L | 7.98 | 1375 – 1400 | 16.3 | 74.0 | 16.5 |
| SS 316Ti | 7.98 | 1375 – 1400 | 16.3 | 74.0 | 16.5 |
| SS 317 | 7.95 | 1375 – 1400 | 16.3 | 74.5 | 16.5 |
| SS 317L | 7.95 | 1375 – 1400 | 16.3 | 74.5 | 16.5 |
| SS 321 | 7.93 | 1400 – 1450 | 16.2 | 74.0 | 16.0 |
| SS 321H | 7.93 | 1400 – 1450 | 16.2 | 74.0 | 16.0 |
| SS 347 | 7.93 | 1400 – 1450 | 16.2 | 74.0 | 16.0 |
| SS 410 | 7.75 | 1480 – 1530 | 30.0 | 78.0 | 11.5 |
| SS 446 | 7.80 | 1400 – 1450 | 30.0 | 76.0 | 11.5 |
| SS 904L | 8.00 | 1350 – 1400 | 15.0 | 70.0 | 16.0 |
Understanding the Buttweld Equal Tee Weight Chart in Kg
The Buttweld Equal Tee Weight Chart in Kg provides the approximate weight of the fitting based on its size and schedule. The weight depends on the thickness of the wall used, grade of material and standard.
As an illustration, a small-size equal tee will weigh significantly less than a big-diameter tee with thick-walled walls. Through this chart, buyers will have an easy time comparing alternatives and be able to select the best fitting alternative without confusion.
Buttweld Equal Tee Weight Chart (Approx.)
| NPS (Inches) | OD (mm) | OD (Inches) | Center to End (mm) | Center to End (Inches) | Approx Weight (Kg) |
| 1/2 | 21.3 | 0.840 | 25 | 1 | 0.20 |
| 3/4 | 26.7 | 1.050 | 29 | 1 1/8 | 0.30 |
| 1 | 33.4 | 1.315 | 38 | 1 1/2 | 0.45 |
| 1 1/4 | 42.2 | 1.660 | 48 | 1 7/8 | 0.75 |
| 1 1/2 | 48.3 | 1.900 | 57 | 2 1/4 | 1.10 |
| 2 | 60.3 | 2.375 | 64 | 2 1/2 | 1.90 |
| 2 1/2 | 73.0 | 2.875 | 76 | 3 | 3.20 |
| 3 | 88.9 | 3.500 | 86 | 3 3/8 | 4.80 |
| 3 1/2 | 101.6 | 4.000 | 95 | 3 3/4 | 6.50 |
| 4 | 114.3 | 4.500 | 105 | 4 1/8 | 8.50 |
| 5 | 141.3 | 5.563 | 124 | 4 7/8 | 13.50 |
| 6 | 168.3 | 6.625 | 143 | 5 5/8 | 19.00 |
| 8 | 219.1 | 8.625 | 178 | 7 | 36.00 |
| 10 | 273.1 | 10.750 | 216 | 8 1/2 | 55.00 |
| 12 | 323.9 | 12.750 | 254 | 10 | 80.00 |
Buttweld Equal Tee Weight Chart In MM Explained
The Buttweld Equal Tee Weight Chart In MM focuses on dimensional details. It contains measurements that are outside diameter, center-to-end length, and size in millimeters. This can be of great assistance in fabrication and layout planning.
Engineers use these dimensions to ensure proper alignment and space management in piping systems. When both weight (kg) and dimensions (mm) are considered together, the risk of installation issues becomes very low.
| Nominal Size | SCH20 | SCH30 | STD | SCH40 | SCH60 | XS | SCH80 | SCH100 | SCH120 | SCH140 | SCH160 | XXS | |
| DN | NPS | ||||||||||||
| 15 | 1/2 | – | 0.15 | 0.16 | 0.16 | – | 0.20 | 0.20 | – | – | – | 0.25 | 0.35 |
| 20 | 3/4 | – | 0.18 | 0.20 | 0.20 | – | 0.30 | 0.30 | – | – | – | 0.35 | 0.45 |
| 25 | 1 | – | 0.27 | 0.28 | 0.28 | – | 0.45 | 0.45 | – | – | – | 0.54 | 0.77 |
| 32 | 1 1/4 | – | 0.46 | 0.55 | 0.55 | – | 0.70 | 0.70 | – | – | – | 0.91 | 1.26 |
| 40 | 1 1/2 | – | 0.68 | 0.78 | 0.78 | – | 1.25 | 1.25 | – | – | – | 1.39 | 1.83 |
| 50 | 2 | – | 0.96 | 1.17 | 1.17 | – | 1.61 | 1.61 | – | – | – | 2.39 | 2.89 |
| 65 | 2 1/2 | – | 2.06 | 2.21 | 2.21 | – | 2.92 | 2.92 | – | – | – | 3.81 | 5.21 |
| 80 | 3 | – | 2.87 | 3.23 | 3.23 | – | 4.42 | 4.42 | – | – | – | 6.17 | 8.01 |
| 90 | 3 1/2 | – | 3.65 | 4.33 | 4.33 | – | 5.95 | 5.95 | – | – | – | – | – |
| 100 | 4 | – | 4.56 | 5.68 | 5.68 | – | 7.88 | 7.88 | – | 10.0 | – | 11.8 | 14.5 |
| 125 | 5 | – | – | 9.08 | 9.08 | – | 12.9 | 12.9 | – | 16.8 | – | 20.5 | 24.0 |
| 150 | 6 | – | – | 13.6 | 13.6 | – | 20.5 | 20.5 | – | 26.1 | – | 32.5 | 38.1 |
| 200 | 8 | 17.5 | 22.0 | 25.5 | 25.5 | 31.8 | 38.7 | 38.7 | 45.4 | 54.1 | 60.4 | 66.6 | 64.6 |
| 250 | 10 | 28.0 | 37.1 | 44.8 | 44.8 | 59.2 | 59.2 | 69.7 | 83.3 | 96.6 | 113 | 125 | 113 |
| 300 | 12 | 42.6 | 55.7 | 63.1 | 68.1 | 93.0 | 83.2 | 112 | 137 | 160 | 178 | 204 | 160 |
| 350 | 14 | 64.5 | 76.3 | 76.3 | 88.7 | 119 | 101 | 148 | 183 | 211 | 238 | 264 | – |
| 400 | 16 | 78.2 | 95.7 | 95.7 | 126 | 164 | 126 | 191 | 252 | 294 | 342 | 375 | – |
| 450 | 18 | 102 | 141 | 121 | 179 | 237 | 160 | 269 | 357 | 419 | 471 | 529 | – |
| 500 | 20 | 168 | 198 | 150 | 235 | 317 | 190 | 365 | 489 | 566 | 651 | 724 | – |
| 550 | 22 | 185 | 241 | 182 | – | 414 | 241 | 482 | 636 | 743 | 846 | 947 | – |
| 600 | 24 | 222 | 305 | 205 | 340 | 516 | 272 | 589 | 796 | 930 | 1046 | 1174 | – |
| 650 | 26 | 340 | – | 254 | – | – | 337 | – | – | – | – | – | – |
| 700 | 28 | 390 | 478 | 289 | – | – | 383 | – | – | – | – | – | – |
| 750 | 30 | 420 | 549 | 332 | – | – | 441 | – | – | – | – | – | – |
| 800 | 32 | 480 | 627 | 379 | 631 | – | 503 | – | – | – | – | – | – |
| 850 | 34 | 540 | 709 | 429 | 714 | – | 569 | – | – | – | – | – | – |
| 900 | 36 | 610 | 796 | 481 | 872 | – | 639 | – | – | – | – | – | – |
| 950 | 38 | – | – | 537 | – | – | 713 | – | – | – | – | – | – |
| 1000 | 40 | – | – | 598 | – | – | 791 | – | – | – | – | – | – |
| 1050 | 42 | – | – | 636 | – | – | 846 | – | – | – | – | – | – |
| 1100 | 44 | – | – | 712 | – | – | 946 | – | – | – | – | – | – |
| 1150 | 46 | – | – | 779 | – | – | 995 | – | – | – | – | – | – |
| 1200 | 48 | – | – | 850 | – | – | 1080 | – | – | – | – | – | – |
| 1300 | 52 | – | – | 917 | – | – | – | – | – | – | – | – | – |
| 1400 | 56 | – | – | 1065 | – | – | – | – | – | – | – | – | – |
| 1500 | 60 | – | – | 1226 | – | – | – | – | – | – | – | – | – |
| 1600 | 64 | – | – | 1398 | – | – | – | – | – | – | – | – | – |
| 1700 | 68 | – | – | 1580 | – | – | – | – | – | – | – | – | – |
| 1800 | 72 | – | – | 1740 | – | – | – | – | – | – | – | – | – |
| 1900 | 76 | – | – | 1980 | – | – | – | – | – | – | – | – | – |
| 2000 | 80 | – | – | 2290 | – | – | – | – | – | – | – | – | – |
How Weight Charts Help in Project Planning
Weight charts are not just numbers on paper. They play a big role in real-world applications. During large projects, hundreds of fittings are used. A small weight difference in one fitting can lead to big changes in total load.
By referring to a Buttweld Equal Tee Weight Chart, project teams can:
- Calculate total pipeline weight accurately
- Select suitable lifting equipment
- Reduce material wastage
- Improve safety at site
This makes the overall project smoother and more cost-effective.
Common Standards Followed for Buttweld Equal Tees
Buttweld equal tees are usually manufactured as per recognized standards like ASME and ASTM. These standards ensure uniform dimensions and consistent weight values. Because of this, weight charts remain reliable across different manufacturers.
Still, slight variations may occur due to tolerance limits, so charts are always considered as approximate values.
Conclusion
A Buttweld Equal Tee Weight Chart is a simple yet powerful tool for anyone involved in piping systems. Whether you are checking the Buttweld Equal Tee Weight Chart in Kg for load calculation or referring to the Buttweld Equal Tee Weight Chart In MM for dimensional accuracy, these charts save time and reduce errors.
Using weight charts helps in better planning, safer installation, and smarter purchasing decisions. For industrial projects where precision matters, this reference becomes an essential part of the workflow.