ASME/ANSI B16.9, ASME B16.28, MSS-SP-43.
1/2"NB TO 48"NB IN.
Seamless and Welded.
Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS.
180 Degree Elbow, 180° Long Radius Elbow -LR Elbow, 180° Short Radius Elbow -SR Elbow
Stainless Steel, Carbon Steel, Alloy Steel, Super Duplex, Duplex Steel, High Nickel Alloys, Copper Nickel.
A Buttweld 180-degree elbow is a crucial component in the piping systems used across various industries, including oil and gas, petrochemical, and power generation. This type of elbow is designed to facilitate a complete change in the flow direction, allowing the pipeline to execute a 180-degree turn. These elbows manufactured by us ensures a strong and leak-proof connection when welded to the adjoining pipes, providing structural integrity and resistance to high pressure and temperature conditions.
The Buttweld 180-degree elbow is typically fabricated from high-grade materials such as stainless steel, carbon steel, alloy steel, or high nickel alloys, chosen based on the specific requirements of the application. These materials offer excellent corrosion resistance, mechanical strength, and durability. The elbows are manufactured according to standards like ASME B16.9, MSS, DIN, EN, JIS, BSI, ensuring uniformity in dimensions, wall thickness, and tolerances. The design includes a smooth inner surface to minimize friction losses and turbulence, which is critical in maintaining efficient flow within the pipeline.
This type of elbow is often used in applications where space constraints necessitate a sharp turn, or in heat exchanger tubing where return bends are common. The installation of a Buttweld 180-degree elbow involves precise welding techniques to ensure a seamless and robust joint. Proper alignment and welding practices are essential to prevent any potential weak points that could lead to leaks or failures under high stress. The buttweld connection, once completed, becomes as strong as the adjoining pipes, offering a reliable solution for complex piping configurations.
Regular maintenance and inspection of Buttweld 180-degree elbows are crucial to ensure the longevity and safety of the piping system. Inspection techniques such as radiographic testing, ultrasonic testing, and hydrostatic testing are employed to detect any defects or degradation in the weld joints and material. Proper maintenance practices, including periodic cleaning and protective coatings, can significantly extend the service life of these elbows, ensuring continuous and efficient operation of the pipeline.
NPS | O.D. D |
180° LR | 180° SR | ||
---|---|---|---|---|---|
Center to Center O |
Back to Face K |
Center to Center O |
Back to Face K |
||
1/2 | 21.3 | 76 | 48 | ||
3/4 | 26.7 | 76 | 51 | ||
1 | 33.4 | 76 | 56 | 51 | 41 |
1.1/4 | 42.2 | 95 | 70 | 64 | 52 |
1.1/2 | 48.3 | 114 | 83 | 76 | 62 |
2 | 60.3 | 152 | 106 | 102 | 81 |
2.1/2 | 73 | 190 | 132 | 127 | 100 |
3 | 88.9 | 229 | 159 | 152 | 121 |
3.1/2 | 101.6 | 267 | 184 | 178 | 140 |
4 | 114.3 | 305 | 210 | 203 | 159 |
5 | 141.3 | 381 | 262 | 254 | 197 |
6 | 168.3 | 457 | 313 | 305 | 237 |
8 | 219.1 | 610 | 414 | 406 | 313 |
10 | 273 | 762 | 518 | 508 | 391 |
12 | 323.8 | 914 | 619 | 610 | 467 |
14 | 355.6 | 1067 | 711 | 711 | 533 |
16 | 406.4 | 1219 | 813 | 813 | 610 |
18 | 457 | 1372 | 914 | 914 | 686 |
20 | 508 | 1524 | 1016 | 1016 | 762 |
22 | 559 | 1676 | 1118 | 1118 | 838 |
24 | 610 | 1829 | 1219 | 1219 | 914 |
Note: Wall thickness (t) must be specified by customer. Dimensions are in millimeters unless otherwise indicated.
Nominal Pipe Size | 1/2 to 2.1/2 | 3 to 3.1/2 | 4 |
---|---|---|---|
Outside Diameter at Bevel (D) |
+ 1.6 - 0.8 |
1.6 | 1.6 |
Inside Diameter at End | 0.8 | 1.6 | 1.6 |
Center to Center (O) | 6 | 6 | 6 |
Back to Face (K) | 6 | 6 | 6 |
Nominal Pipe Size | 5 to 8 | 10 to 18 | 20 to 24 |
Outside Diameter at Bevel (D) |
+ 2.4 - 1.6 |
+ 4 - 3.2 |
+ 6.4 - 4.8 |
Inside Diameter at End | 1.6 | 3.2 | 4.8 |
Center to Center (O) | 6 | 10 | 10 |
Back to Face (K) | 6 | 6 | 6 |
Wall Thickness (t) | Not less than 87.5% of Nominal Wall Thickness |