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Buttweld Swage Nipple is an important pipe fitting used in many industrial piping systems. It assists in linking two pipes that have not the same diameter through a smooth and firm manner. Buttweld Swage Nipple is generally used in oil & gas, petrochemical, power plants, and water pipes. Due to its welding on the pipe, it is very strong and does not leak.
Buttweld Swage Nipples are produced in various sizes, wall thicknesses and materials to suit the requirements of different projects. Their simple design and high durability make them a preferred choice for critical piping applications.
What Is a Buttweld Swage Nipple?
A Buttweld Swage Nipple is a pipe fitting with two different end sizes. The diameter of one end is bigger and the other one is smaller. The design can effortlessly make the passage between unequal size pipes without disrupting flow of liquid or gases.
Butt welding is used to weld these fittings and they form a permanent and strong joint. Buttweld connections are more dependable than threaded or socket fittings, particularly in high pressure and high temperature applications.
Types of Buttweld Swage Nipples
Buttweld Swage Nipples are mainly available in two common types:
- Concentric Swage Nipple – Both ends share the same center line, allowing smooth and even flow.
- Eccentric Swage Nipple – The center lines are offset, often used where drainage or level flow control is required.
Each type is selected based on the piping layout and system requirements.
Buttweld Swage Nipple Dimensional Table
| DN | NPS | Large End OD (D1) mm | Small End OD (D2) mm | Overall Length (L) mm | Large End Thickness (T1) mm | Small End Thickness (T2) mm | Approx Weight (kg) |
| 15 | 1/2 | 21.3 | 15.0 | 76 | 2.8 | 2.3 | 0.20 |
| 20 | 3/4 | 26.7 | 21.3 | 76 | 2.9 | 2.8 | 0.32 |
| 25 | 1 | 33.4 | 26.7 | 89 | 3.4 | 2.9 | 0.55 |
| 32 | 1 1/4 | 42.2 | 33.4 | 89 | 3.6 | 3.4 | 0.85 |
| 40 | 1 1/2 | 48.3 | 42.2 | 102 | 3.7 | 3.6 | 1.15 |
| 50 | 2 | 60.3 | 48.3 | 102 | 3.9 | 3.7 | 1.75 |
| 65 | 2 1/2 | 73.0 | 60.3 | 127 | 5.2 | 3.9 | 2.80 |
| 80 | 3 | 88.9 | 73.0 | 127 | 5.5 | 5.2 | 3.95 |
| 100 | 4 | 114.3 | 88.9 | 152 | 6.0 | 5.5 | 6.20 |
| 125 | 5 | 141.3 | 114.3 | 178 | 6.6 | 6.0 | 9.80 |
| 150 | 6 | 168.3 | 141.3 | 203 | 7.1 | 6.6 | 14.50 |
| 200 | 8 | 219.1 | 168.3 | 229 | 8.2 | 7.1 | 24.80 |
| 250 | 10 | 273.0 | 219.1 | 254 | 9.3 | 8.2 | 38.50 |
| 300 | 12 | 323.8 | 273.0 | 279 | 9.5 | 9.3 | 55.00 |
Importance of Buttweld Swage Nipple Weight Chart
The Buttweld Swage Nipple Weight Chart is a useful reference for engineers, buyers, and project planners. It provides the approximate weight of swage nipples based on size and wall thickness. Knowing the weight helps in planning transportation, installation, and overall project cost.
Buttweld Swage Nipple weight chart is a handy tool to the engineer, buyers and project planners. It gives the estimated weight of swage nipples depending on size and wall thickness. The weight is known to assist in the transporting plans, installation and the overall project cost.
Buttweld Swage Nipple Weight Chart
| Size Transition (NPS) | DN Range | Length (mm) | Outside Diameter – Large End (mm) | Outside Diameter – Small End (mm) | Approx Weight (kg) |
| 1 × 3/4 | 25 × 20 | 80 | 33.4 | 26.7 | 0.48 |
| 1 1/4 × 1 | 32 × 25 | 90 | 42.2 | 33.4 | 0.78 |
| 1 1/2 × 1 1/4 | 40 × 32 | 100 | 48.3 | 42.2 | 1.05 |
| 2 × 1 1/2 | 50 × 40 | 110 | 60.3 | 48.3 | 1.60 |
| 2 1/2 × 2 | 65 × 50 | 125 | 73.0 | 60.3 | 2.40 |
| 3 × 2 1/2 | 80 × 65 | 135 | 88.9 | 73.0 | 3.45 |
| 4 × 3 | 100 × 80 | 155 | 114.3 | 88.9 | 5.60 |
| 5 × 4 | 125 × 100 | 180 | 141.3 | 114.3 | 8.90 |
| 6 × 5 | 150 × 125 | 200 | 168.3 | 141.3 | 13.20 |
| 8 × 6 | 200 × 150 | 225 | 219.1 | 168.3 | 22.80 |
| 10 × 8 | 250 × 200 | 255 | 273.0 | 219.1 | 36.50 |
| 12 × 10 | 300 × 250 | 280 | 323.8 | 273.0 | 52.90 |
Buttweld Swage Nipple Weight Chart in MM
The Buttweld Swage Nipple Weight Chart in MM lists dimensions in millimeters, which is widely used in engineering drawings and international projects. This chart includes details such as:
- Larger end diameter in mm
- Smaller end diameter in mm
- Length of the swage nipple
- Wall thickness
Using measurements in millimeters helps avoid confusion and ensures better accuracy during fabrication and installation.
Buttweld Swage Nipple Weight Chart in MM
| Large End Size (DN) | Small End Size (DN) | Large OD (mm) | Small OD (mm) | Body Length (mm) | End-to-End Taper (mm) | Approx Weight (kg) |
| 25 | 20 | 33.4 | 26.7 | 78 | 12 | 0.46 |
| 32 | 25 | 42.2 | 33.4 | 88 | 14 | 0.74 |
| 40 | 32 | 48.3 | 42.2 | 98 | 16 | 1.02 |
| 50 | 40 | 60.3 | 48.3 | 108 | 18 | 1.58 |
| 65 | 50 | 73.0 | 60.3 | 122 | 21 | 2.35 |
| 80 | 65 | 88.9 | 73.0 | 132 | 23 | 3.30 |
| 100 | 80 | 114.3 | 88.9 | 152 | 26 | 5.45 |
| 125 | 100 | 141.3 | 114.3 | 176 | 29 | 8.70 |
| 150 | 125 | 168.3 | 141.3 | 198 | 32 | 12.90 |
| 200 | 150 | 219.1 | 168.3 | 224 | 36 | 22.40 |
| 250 | 200 | 273.0 | 219.1 | 252 | 40 | 36.10 |
| 300 | 250 | 323.8 | 273.0 | 278 | 44 | 52.30 |
Buttweld Swage Nipple Weight Chart in kg
The Buttweld Swage Nipple Weight Chart in kg shows the weight of each fitting in kilograms. This is especially helpful for bulk orders and large-scale projects. Knowing the weight in kg helps in:
- Estimating shipping and handling costs
- Planning storage requirements
- Managing site lifting and safety measures
Accurate weight information also supports better inventory management and reduces material wastage.
Common Materials Used
Buttweld Swage Nipples are manufactured in a wide range of materials to suit different environments. Common options include carbon steel, stainless steel, alloy steel, and special grades for corrosion resistance. Material selection depends on factors like pressure, temperature, and the type of fluid being carried.
High-quality materials ensure longer service life and reduce maintenance needs.
Benefits of Using Buttweld Swage Nipples
There are many advantages of using buttweld swage nipples in piping systems:
- Strong and permanent welded connection
- Smooth flow with minimal pressure loss
- Suitable for high-pressure applications
- Long-lasting and low maintenance
- Clean and compact piping layout
These benefits make them ideal for demanding industrial conditions.
Conclusion
The swage nipple- Buttweld is the type of swage nipple that is important in attaching pipes of varying sizes in an efficient and safe way. Knowledge of the Buttweld Swage Nipple Weight Chart with the description in MM and kg is useful in more appropriate planning of the project and cost management. These fittings have good performance, and can be relied on to provide good performance and value in any piping system, with the proper selection of size, material, and weight.