| Customization: | Available |
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| After-sales Service: | 1 Year |
| Warranty: | 1 Year |
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All of the casing and tubing couplings and pup joints are with materials of steel grade including J55, K55, N80, N80-1, N80-Q, L80, P110, and so on. The casing couplings and pup joints have STC/LTC/BTC, and the tubing couplings have NUE/EUE. By numerically controlled lathe and import molding cutter, the processing of thread can be finished in one time, which ensures its commonality and interchangeability. We have complete testing abilities, adopting a whole set of single testing apparatus of thread, including tape, pitch, tooth depth, and profile. All of our couplings meet the API 5CT.
Tubing Pup Joint Technical Parameters:| SPECIFICATIONS | ||||
| Tubing Pup Joint | OD | GRADE | END TYPE | LENGTH (FT) |
| 2 3/8 | J/K/L/N/P | NUE/EUE | 2/3/4/5/6/8/10/12 2 7/8 |
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| 2 7/8" | J/K/L/N/P | NUE/EUE | 2/3/4/5/6/8/10/12 | |
| 3 1/2" | J/K/L/N/P | NUE/EUE | 2/3/4/5/6/8/10/12 | |
| 4 1/2" | J/K/L/N/P | NUE/EUE | 2/3/4/5/6/8/10/12 | |
| Size | Types of Thread | O.D*L(mm) | Grade |
| 2-3/8" | NUE | 73.02*107.92 | H40 |
| 2-3/8 | EUE | 77.80*123.82 | J55 |
| 2-7/8" | NUE | 88.90*130.35 | |
| 2-7/8" | EUE | 93.17*130.35 | K55 |
| 3-1/2" | NUE | 107.95*142.88 | |
| 3-1/2" | EUE | 114.30*146.05 | N80-1 |
| 4 | NUE | 114.30*146.06 | N80-Q |
| 4 | EUE | 114.30*146.07 | L80 |
| 4-1/2" | NUE | 114.30*146.08 | C90 |
| 4-1/2" | EUE | 114.30*146.09 | P110 |
Casing Pup Joint |
OD | GRADE | END TYPE |
| 4 1/2" | J/K/L/N/P | LTC/STC/BTC | |
| 5" | J/K/L/N/P | LTC/STC/BTC | |
| 5 1/2 | J/K/L/N/P | LTC/STC/BTC | |
| 6 5/8" | J/K/L/N/P | LTC/STC/BTC | |
| 7" | J/K/L/N/P | LTC/STC/BTC | |
| 7 5/8" | J/K/L/N/P | LTC/STC/BTC | |
| 7 3/4" | J/K/L/N/P | LTC/STC/BTC | |
| 8 5/8" | J/K/L/N/P | LTC/STC/BTC | |
| 9 5/8" | J/K/L/N/P | LTC/STC/BTC | |
| 10 3/4" | J/K/L/N/P | STC/BTC | |
| 11 3/4" | J/K/L/N/P | STC/BTC | |
| 13 3/8" | J/K/L/N/P | STC/BTC |
| Specification | O.D(mm) | W.T(mm) | Thread type | Steel grade | Length |
| 4-1/2 | 114.30 | 6.35 | STC,LTC,BTC | J55,N80,P110 | 0.5m-5m |
| 5 | 127.00 | 7.52 | STC,LTC,BTC | J55,N80,P110 | |
| 5-1/2 | 139.70 | 7.72 | STC,LTC,BTC | J55,N80,P110 | |
| 6-5/8 | 168.28 | 8.94 | STC,LTC,BTC | J55,N80,P110 | |
| 7 | 177.80 | 8.05 | STC,LTC,BTC | J55,N80,P110 | |
| 7-5/8 | 193.68 | 8.33 | STC,LTC,BTC | J55,N80,P110 | |
| 8-5/8 | 219.08 | 10.16 | STC,LTC,BTC | J55,N80,P110 | |
| 9-5/8 | 244.48 | 10.03 | STC,LTC,BTC | J55,N80,P110 | |
| 10-3/4 | 273.05 | 11.43 | STC,LTC,BTC | J55,N80,P110 | |
| 11-3/4 | 298.45 | 12.42 | STC,LTC,BTC | J55,N80,P110 | |
| 13-3/8 | 339.72 | 12.19 | STC,LTC,BTC | J55,N80,P110 | |
| 16 | 406.40 | 12.57 | STC,LTC,BTC | J55,N80,P110 | |
| 18-5/8 | 473.08 | 11.05 | STC,LTC,BTC | J55,N80,P110 | |
| 20 | 508.00 | 12.70 | STC,LTC,BTC | J55,N80,P110 |
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