Structural Characteristics
● Bending radius: The center-to-face distance (i.e., bending radius) of a long radius elbow is usually 1.5 times the nominal pipe diameter (NPS) (also said to be 1.1/2 times), a design that helps the fluid maintain a stable flow rate and pressure during a turn.
● End design: To improve weld quality, the end of the elbow is usually turned into a bevel with an angle and edge for butt-welding connection to the pipe.
Dimensions Butt Weld Elbows
|
NPS |
O.D. |
90° LR |
45° LR |
90° 3D |
45° 3D |
|
1/2 |
21.3 |
38 |
16 |
|
|
|
3/4 |
26.7 |
38 |
19 |
57 |
24 |
|
1 |
33.4 |
38 |
22 |
76 |
31 |
|
1.1/4 |
42.2 |
48 |
25 |
95 |
39 |
|
1.1/2 |
48.3 |
57 |
29 |
114 |
47 |
|
2 |
60.3 |
76 |
35 |
152 |
63 |
|
2.1/2 |
73 |
95 |
44 |
190 |
79 |
|
3 |
88.9 |
114 |
51 |
229 |
95 |
|
3.1/2 |
101.6 |
133 |
57 |
267 |
111 |
|
4 |
114.3 |
152 |
64 |
305 |
127 |
|
5 |
141.3 |
190 |
79 |
381 |
157 |
|
6 |
168.3 |
229 |
95 |
457 |
189 |
Application Scenario
● Petrochemical: In a petrochemical plant, the butt welded 90° long radius elbow is often used to alter the direction of the pipe, the branch of the pipe and the special connection.
● Power: In the power system, the elbow is also used to connect the pipes in different directions to make sure that the cooling water or other liquid flows smoothly.
● Other fields: In addition, butt-welding 90°long radius elbow is also widely used in medicine and health, aerospace, military, fire fighting, metallurgy, shipbuilding, gas, nuclear power and environmental protection and other high-pressure pipeline areas that require high pressure.
