SW Series · Socket Weld Fittings
Copper-Nickel Plug
Our CuNi plug is used to close off a socket opening, commonly on tees, crosses or half couplings. Manufactured in both 90/10 (UNS C70600) and 70/30 (UNS C71500) grades to ASME B16.11, it is forged and machined in-house with full material traceability.
Size Range1/8" – 4" NPS
Pressure Classes3000 / 6000 / 9000
StandardASME B16.11
Grades AvailableCuNi 90/10 & 70/30
DIMENSIONS & RATINGS
Available Sizes, Pressure Ratings & Dimensions
Nominal reference values for the socket weld fittings range. Exact dimensions for the plug are confirmed on the certified drawing issued with your order.
| 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 |
MATERIAL GRADES
Compare grades in detail →
CuNi 90/10 vs. 70/30
| Grade | UNS | Composition |
|---|---|---|
| 90/10 | C70600 | 88-90% Cu, 10-11% Ni, 1.0-1.8% Fe |
| 70/30 | C71500 | 65-69% Cu, 29-33% Ni, 0.4-1.0% Fe |
STANDARDS COMPLIANCE
Manufactured & Tested To
- ✓ASME B16.11
- ✓ASTM B466 / B467 material specification
- ✓EN 10204 3.1 material test certificates
- ✓ISO 9001:2015 quality management system
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