Dongying Oilman Machinery Equipment Co.,Ltd.
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Description of lifting sub
Lifting sub is the special tools for lifting of the drill tools in petroleum, natural gas industry and geologic exploration. There're two types for drill tool lifting sub in structure: type A or B. Type A lift sub is with 18 degree shoulder, and type B is with 90 degree shoulder. All lifting subs are complied with API standard.
Technical specifications and parameters
| No. | Nominal size D+/-0.1 mm(in) | ID d/mm | External Thread connection | Lifting end | ||||
| Thread type | OD Dp+/-0.1 mm(in) | Bevelled DE/mm | Tong Space LPB/mm | DB+/-0.1 | Tong Space LPB/mm | |||
| 1 | 73 (2 7/8) | 31.8 | NC23 | 79.4 | 76.2 | 250 | 111.1 | 100 |
| 2 | 44.5 | NC26(2 3/8) | 88.9 | 82.9 | ||||
| 3 | 89 (3 1/2) | 54 | NC31(2 7/8) | 104.8 | 100.4 | 127 | ||
| 4 | 50.8 | NC35 | 120.7 | 114.7 | ||||
| 5 | 68.3 | NC38(3 1/2) | 127 | 121 | ||||
| 6 | 127(5) | 71.4 | NC44 | 152.4 | 144.5 | 168.3 | ||
| 7 | 158.8 | 149.2 | ||||||
| 8 | 82.6 | NC46 (4" IF) | 158.8 | 150 | ||||
| 9 | 165.1 | 154.8 | ||||||
| 10 | 171.5 | 159.5 | ||||||
| 11 | 127 | 82.6 | NC50(4 1/2"IF) | 177.8 | 164.7 | 250 | 168.3 | 100 |
| 12 | 184.2 | 169.5 | ||||||
| 13 | NC56 | 196.8 | 185.3 | 300 | ||||
| 203.2 | 190.1 | |||||||
| 14 | 6 5/8"REG | 209.6 | 195.7 | |||||
| 15 | 95.3 | NC61 | 228.6 | 212.7 | ||||
| 16 | 7 5/8"REG | 241.3 | 223.8 | |||||
| 17 | NC70 | 247.7(9 3/4) | 232.6 | |||||
| 18 | 254(10) | 237.3 | ||||||
| 19 | NC77 | 279.4(11) | 260.7 | |||||
| 20 | ||||||||
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