Non-upset tubing
Non-upset tubing is made of steel tube and it has non-upset ends. The steel tubes are made of an alloy of iron, carbon and other elements. NU stands for non-upset joint. A difference between NU and EU (external upset) is that NU usually has 10 teeth per inch and EU often contains 8 teeth per inch. This oil pipe is used in the construction industry, but it also can be found in other manufacturing and industrial applications. Non-upset tubing is used to transport fluids and gasses for commercial and residential buildings.
Structure
The non-upset tubing is processed with threads at both ends. On one end is installed with a coupling. The coupled end and the other end are both mounted with protectors to protect the thread. This oil pipe is manufactured according to API specifications.
| Type | Size(O.D. ) | Nominal Weight | W.T. | I.D. | Coupling | |||
| in | Mm | Lbf/ft | Kg/m | mm | mm | O.D.mm | Min length mm | |
| NUE J55 L80 N80 P110 | 1.90 | 48.26 | 2.75 | 4.09 | 3.68 | 40.90 | 55.88 | 95.25 |
| 2 3/8 | 60.32 | 4.60 | 6.85 | 4.83 | 50.66 | 73.02 | 107.95 | |
| 2 7/8 | 73.02 | 6.40 | 9.52 | 5.51 | 62.00 | 88.90 | 130.18 | |
| 3 ½ | 88.90 | 9.20 | 13.69 | 6.45 | 76.00 | 107.95 | 142.88 | |
| 4 1/2 | 114.30 | 12.60 | 18.75 | 6.88 | 100.54 | 132.08 | 155.58 | |
| EUE J55 L80 N80 P110
| 1.90 | 48.26 | 2.90 | 4.32 | 3.68 | 40.90 | 63.50 | 98.42 |
| 2 3/8 | 60.32 | 4.70 | 6.99 | 4.83 | 50.66 | 77.80 | 123.82 | |
| 2 7/8 | 73.02 | 6.50 | 9.67 | 5.51 | 62.00 | 93.17 | 133.35 | |
| 3 ½ | 88.90 | 9.30 | 13.84 | 6.45 | 76.00 | 114.30 | 146.05 | |
| 4 1/2 | 114.30 | 12.75 | 18.97 | 6.88 | 100.54 | 141.30 | 158.75 | |
Non upset tubing connection
Upset Tubing (EUE) is a long tubing with joint installed in a wellbore to facilitate the extraction of oil and gas. ... Non-upset tubing refers to the pipe end without the extra thick and straight thread and collar. Non-upset (NUE) tubing is used much less than EUE tubing
There may be the same material and grades with upsetting tubing and non-upset tubing. The maximum difference between them are the tube end which is outer diameter. Non-upset tubing refers to the pipe end without the extra thick and straight thread and collar. Non-upset (NUE) tubing is used much less than EUE tubing. The cost of NUE is only slightly less than EUE, and the joint strength is substantially less. The coupling joint diameter of NUE is less than EUE, which offers some advantages when clearance is small. API NUE joints are available in sizes of 1.050 to 4.500 in.
Shengji Petroleum Pumping Unit Manufacturing Plant is one of the main branches of Shengji Group. It is a professional manufacturer specializing in the development, design, production, remanufacturing, maintenance, sales and service of pumping units. The factory has 235 employees, more than 130 sets of various large and medium-sized mechanical processing equipment, fixed assets of 12 million yuan, annual output of 1,200 pumping units, and annual sales income of 200 million yuan.
There are 4 senior engineers, 12 intermediate engineers, 7 assistant engineers, 4 senior technicians and 12 technicians in the pumping unit. Intermediate and senior workers account for more than 90% of all workers. The superb technical level of employees provides a technical guarantee for the production of high-quality pumping units.
