Steel coupling
PIC-(Steel coupling)
Steel coupling
The API couplings for tubing and casing pipes. the usage is conect two casing pipes. According to the steel grade , the steel coupling have J55,K55,N801,N80Q,L80 1,L80 13Cr,C90, T95,P110,Q125 etc. Base on the sizes there have 4-1/2 、5 、5-1/2、 6-5/8 、7、 7-5/8、 8-5/8 、9-5/8 、10-3/4、 11-3/4 、13-3/8 、16 、18-5/8 、20 etc. By the type of NPT, there have LC, STC, BC and special NPT etc.
| Descriptions and size | Type of Thread | O.D*L(mm) | Weight(kg) | |
| Tubing coupling | 2-3/8" | NUE | 73.02*107.95 | 1.28 |
| 2-3/8" | EUE | 77.80*123.82 | 1.55 | |
| 2-7/8" | NUE | 88.90*130.18 | 2.34 | |
| 2-7/8" | EUE | 93.17*130.35 | 2.4 | |
| 3-1/2" | NUE | 107.95*142.88 | 3.17 | |
| 3-1/2" | EUE | 114.30*146.05 | 4.1 | |
| 4" | NUE | 120.65*146.05 | 4.35 | |
| 4" | EUE | 127.00*152.40 | 4.82 | |
| 4-1/2" | NUE | 132.08*155.58 | 4.89 | |
| 4-1/2" | EUE | 141.30*158.75 | 6.05 | |
| Casing Coupling | 4-1/2" | STC | 127.00*158.75 | 5.23 |
| 4-1/2" | LTC | 127.00*177.80 | 4.15 | |
| 4-1/2" | BTC | 127.00*225.42 | 4.55 | |
| 5" | STC | 141.30*165.10 | 4.66 | |
| 5" | LTC | 141.30*196.85 | 5.75 | |
| 5" | BTC | 141.30*231.78 | 5.85 | |
| 5-1/2" | STC | 153.67*172.45 | 5.23 | |
| 5-1/2" | LTC | 153.67*203.20 | 6.42 | |
| 5-1/2" | STC | 153.67*234.95 | 6.36 | |
| 6-5/8" | STC | 187.71*184.15 | 9.12 | |
| 6-5/8" | LTC | 187.71*222.25 | 11.34 | |
| 6-5/8" | STC | 187.71*244.48 | 11.01 | |
| 7" | STC | 194.46*187.15 | 8.39 | |
| 7" | LTC | 194.46*228.60 | 10.83 | |
| 7" | STC | 194.46*254.00 | 10.54 | |
| 7-5/8" | STC | 215.90*190.50 | 12.3 | |
| 7-5/8" | LTC | 215.90*234.95 | 15.63 | |
| 7-5/8" | STC | 215.90*263.52 | 15.82 | |
| 8-5/8" | STC | 244.48*196.85 | 16.23 | |
| 8-5/8" | LTC | 244.48*254.00 | 21.67 | |
| 8-5/8" | STC | 244.48*269.88 | 20.86 | |
| 9-5/8" | STC | 269.88*196.85 | 18.63 | |
| 9-5/8" | LTC | 269.88*266.70 | 25.45 | |
| 9-5/8" | STC | 269.88*269.88 | 23.16 | |
| 10-3/4" | STC | 298.45*203.20 | 20.78 | |
| 10-3/4" | STC | 298.45*269.88 | 25.74 | |
| 11-3/4" | STC | 323.85*203.20 | 22.64 | |
| 11-3/4" | BTC | 323.85*269.88 | 28.03 | |
| 13-3/8" | STC | 365.12*203.20 | 25.66 | |
| 13-3/8" | BTC | 365.12*269.88 | 31.77 |
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