External upset tubing has knuckle thread. With the external upset end, connection and sealing of this oil tube are realized. Its thread is one of the basic thread type released by the American Petroleum Institute. The thread form is a triangle with round top and round bottom and thread form angle is 60°. Conical degree of the thread is 1:16. The bisector of the angle is vertical to the axis. External upset tubing has a minimum outer diameter of 77.80 mm which is bigger than that of the non upset tubing. Therefore, our products can better resist impact and corrosion.
Features
1. The upsetting process has enhanced the connection strength of the joints.
2. With the help of thread compound, the external upset tubing can be sealed. There is a space of 0.076mm between the rest and root of the thread. When the thread is screwed up, this space will be filled with thread compound. When the thread compound is solidified, it will jam the space to realize the sealing effect.
3. Coupling of external upset tubing has light weight (Its minimum weight is 1.55kg and the maximum weight is 6.02kg). Customers can feel convenient to install and use it.
4. Our product has undergone the manual thread inspection, the nondestructive coupling test, the surface paint spraying and other processes. Therefore, reliable quality of the product and stability of the oil tube connection are ensured.
Specification | Nominal Weight | Outer Diameter | Wall Thickness | Processing Mode of the Ends | ||||||||
Steel Grade | ||||||||||||
NU(non-upset) with Thread and Coupling | EU(external-upset) with Thread and Coupling | in | mm | in | mm | J55 K55 | L80 | N80 | C90 | T95 | P110 | |
1.900 | 2.40 | - | 1.900 | 48.26 | 0.125 | 3.18 | PI | - | - | - | - | - |
2.75 | 2.90 | 0.145 | 3.68 | PNUI | PNUI | PNUI | PNUI | PNUI | - | |||
3.65 | 3.73 | 0.200 | 5.08 | PU | PU | PU | PU | PU | PU | |||
4.42 | - | 0.250 | 6.35 | - | P | - | P | P | - | |||
5.15 | - | 0.300 | 7.62 | - | P | - | P | P | - | |||
2 3/8 | 4.00 | - | 2.375 | 60.3 | 0.167 | 4.24 | PN | PN | PN | PN | PN | - |
4.00 | 4.70 | 0.190 | 4.83 | PNU | PNU | PNU | PNU | PNU | PNU | |||
5.80 | 5.95 | 0.254 | 6.45 | - | PNU | PNU | PNU | PNU | PNU | |||
6.60 | - | 0.259 | 7.49 | P | P | P | P | P | - | |||
7.35 | 7.45 | 0.336 | 8.53 | PU | PU | PU | PU | PU | - | |||
2 7/8 | 6.40 | 6.50 | 2.875 | 73.02 | 0.217 | 5.51 | PNU | PNU | PNU | PNU | PNU | PNU |
7.80 | 7.90 | 0.276 | 7.01 | - | PNU | PNU | PNU | PNU | PNU | |||
8.60 | 8.70 | 0.308 | 7.82 | - | PNU | PNU | PNU | PNU | PNU | |||
9.35 | 9.45 | 0.340 | 8.64 | - | PU | - | PU | PU | - | |||
10.50 | - | 0.392 | 9.96 | - | P | - | P | P | - | |||
11.50 | - | 0.440 | 11.18 | - | P | - | P | P | - | |||
3 1/2 | 7.70 | - | 3.500 | 88.9 | 0.216 | 5.49 | PN | PN | PN | PN | PN | - |
9.20 | 9.30 | 0.254 | 6.45 | PUN | PUN | PUN | PNU | PNU | PUN | |||
10.20 | - | 0.289 | 7.34 | PN | PN | PN | PN | PN | - | |||
12.70 | 12.95 | 0.375 | 9.53 | - | PUN | PUN | PNU | PNU | PUN | |||
14.30 | - | 0.430 | 10.92 | - | P | - | P | P | - | |||
15.50 | - | 0.476 | 12.00 | - | P | - | P | P | - | |||
17.00 | - | 0.530 | 13.46 | - | P | - | P | P | - | |||
4 | 9.50 | - | 4.00 | 101.6 | 0.226 | 5.74 | PN | PN | PN | PN | PN | PN |
10.70 | 11.00 | 0.262 | 6.65 | PU | PU | PU | PU | PU | PU | |||
4 1/2 | 12.60 | 12.75 | 4.500 | 114.3 | 0.271 | 6.88 | PNU | PNU | PNU | PNU | PNU | - |
15.20 | - | 0.337 | 8.56 | - | P | - | P | P | - | |||
17.00 | - | 0.380 | 9.65 | - | P | - | P | P | - | |||
18.90 | - | 0.430 | 10.92 | - | P | - | P | P | - | |||
21.50 | - | 0.500 | 12.70 | - | P | - | P | P | - | |||
23.70 | - | 0.560 | 14.22 | - | P | - | P | P | - | |||
26.10 | - | 0.630 | 16.00 | - | P | - | P | P | - |