Copper-Nickel Socket Weld Fittings
Socket weld forged fittings are welded directly into the pipeline, with the pipe end inserted into a machined socket before fillet welding. This gives a leak-tight joint well suited to small-bore, high-pressure CuNi piping such as seawater cooling and hydraulic lines.
Socket Weld Fittings — Full Range
90° Elbow
Changes pipe direction by 90°
45° Elbow
Changes pipe direction by 45°
Tee
Equal three-way branch connection
Cross
Four-way equal branch connection
Full Coupling
Joins two equal-size pipe ends
Half Coupling
Branch connection welded to run pipe
Reducing Coupling
Joins two different pipe sizes
Union
Union
Cap
Cap
Plug
Plug
Reducer Insert
Socket-welding reducer insert
Boss
Weld boss for branch/instrument connection
Representative Dimensions
Nominal reference values by size — exact dimensions vary slightly by fitting type. Full certified dimensional data sheets are available on request.
| NPS | Socket Depth (mm) | Wall Thickness Class 3000 (mm) | Wall Thickness Class 6000 (mm) | Body Length — Elbow (mm) |
|---|---|---|---|---|
| 1/8" | 9.5 | 2.3 | 3.0 | 17.5 |
| 1/4" | 9.5 | 2.4 | 3.2 | 20.6 |
| 1/2" | 12.7 | 2.9 | 3.7 | 27.0 |
| 3/4" | 12.7 | 3.0 | 3.9 | 30.2 |
| 1" | 15.9 | 3.4 | 4.5 | 38.1 |
| 1-1/2" | 15.9 | 3.7 | 4.9 | 47.8 |
| 2" | 17.5 | 3.9 | 5.5 | 57.2 |
| 3" | 22.4 | 4.5 | 6.3 | 76.2 |
| 4" | 22.4 | 5.1 | 7.1 | 95.2 |
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