API 5CT 2-7/8 J55 NU tubing coupling
Tubing coupling is the joining of two short length pipes by the means of female and male threads. All types of tubing couplings have internal threads which are known as female thread forms. These thread forms are usually machined so that they can be coupled with the external threads on pipes known as male thread forms.
Tubing couplings are strictly designed as per API 5CT specification. There are two types of tubing couplings widely used in the pipeline coupling manufacturing industries namely:
Non-upset Tubing Coupling
External-upset Tubing Coupling
The table below shows the specifications with respect to these two tubing couplings.
| API EUE Tubing Couplings | |||||
| Size OD | Couplig Size OD (in) | Length(in) | Weight Per Piece (Kg) | Palletized Carton Quantity (piece) | Palletized Carton Weight (Kg) |
| 1.9 | 2.188 | 3.750 | 0.84 | 2,800 | 2352 |
| 2 3/8 | 3.063 | 4.875 | 1.55 | 1,414 | 2239 |
| 2 7/8 | 3.668 | 5.500 | 2.40 | 792 | 1901 |
| 3 1/2 | 4.500 | 5.750 | 4.10 | 448 | 1837 |
| 4 | 4.750 | 5.750 | 4.82 | 320 | 1543 |
| 4 1/2 | 5.563 | 6.500 | 6.05 | 252 | 1525 |
| API NUE Tubing Couplings | |||||
| 1.9 | 2.188 | 3.750 | 0.56 | 2900 | 1624 |
| 2 3/8 | 2.875 | 4.500 | 1.28 | 1,512 | 1936 |
| 2 7/8 | 3.500 | 5.500 | 2.34 | 800 | 1872 |
| 3 1/2 | 4.250 | 5.625 | 3.71 | 502 | 1863 |
| 4 | 4.726 | 5.750 | 4.35 | 382 | 1662 |
| 4 1/2 | 5.200 | 6.500 | 4.89 | 252 | 1233 |
| Grade Colour Codes | |||
| Grade | Grade Type | Colours For Couplings | |
| Entair Coupling | Band(s) | ||
| J55 | Bright Green | None | |
| K55 | Bright Green | None | |
| N80 | 1 | Red | None |
| N80 | Q | Red | Green |
| L80 | 1 | Red | One Brown |
| P110 | White | None | |
Place of Origin:
Brand Name:
Model Number:
Material:
Technics:
Shape:
Product name:
Head Code:
ROUND
Color:
GREEN
Surface treatment:
Usage:
