High Quality petroleum spiral Oil Well Operations Drilling Tool Joint lifting sub
Lifting sub is the special tools for lifting of the drill tools in petroleum, natural gas industry and geologic exploration. The lifting sub is usually an integral structure and is divided into two types, type A and type B. Type A lifting sub has 18 degree shoulders, while Type B has 90 degree shoulders. Depending on the structure of the elevator, you can choose the appropriate type A or type B lifting sub. All threads are API compliant .


Nominal size mm/(in) | O.D (mm) | Male joint | Lift end | ||||||
Thread type | O.D mm/(in) | Chamfer diameter (mm)Serial Number | Tongs bite length (mm) | O.D (mm) | Lift shoulder root fillet radius (mm) | Tongs bite length (mm) | |||
1 | 73.0(2-7/8) | 31.8 | NC23 | 79.4(3-1/8) | 76.2 | 250.0 | 111.1 | 4.8 | 100 |
2 | 44.5 | NC26 | 88.9(3-1/2) | 82.9 | |||||
3 | 88.9(3-1/2) | 54.0 | NC31 | 104.8(4-1/8) | 100.4 | 127 | |||
4 | 50.8 | NC35 | 120.7(4-3/4) | 114.7 | |||||
5 | 68.3 | NC38 | 127.0(5) | 121.0 | |||||
6 | 127.0(5) | 71.4 | NC44 | 152.4(6) | 144.5 | 168.3 | 6.4 | ||
7 | 158.8(6-1/4) | 149.2 | |||||||
8 | 82.6 | NC46 | 158.8(6-1/4) | 150.0 | |||||
9 | 165.1(6-1/2) | 154.8 | |||||||
10 | 171.5(6-3/4) | 159.5 | |||||||
11 | 95.3 | NC50 | 177.8(7) | 164.7 | |||||
12 | 184.2(7-1/4) | 169.5 | |||||||
13 | NC56 | 196.8(7-3/4) | 185.3 | 300.0 | |||||
14 | 203.2(8) | 190.1 | |||||||
15 | 6-5/8REG | 209.6(8-1/4) | 195.7 | ||||||
16 | NC61 | 228.6(9) | 212.7 | ||||||
17 | 7-5/8REG | 241.3(9-1/2) | 223.8 | ||||||
18 | NC70 | 247.7(9-3/4) | 232.6 | ||||||
19 | 254.0(10) | 237.3 | |||||||
20 | 8-5/8REG | 279.4(11) | 266.7 |





Dongying TIANRUI PETROLEUM Technology Co., Ltd., established in November 2003 and located in the Dongying Economic Development Zone, is an investment project in Dongying City. It is mainly engaged in the research, design, manufacturing and technical services of oil drilling and workover tools. The company consists of six departments and two workshops, namely the design department, the quality inspection department, the market operation department, the comprehensive department, the technical service department, the financial department, the processing workshop and the assembly workshop. It possesses rich R & D and design capabilities as well as manufacturing capabilities in oil drilling and workover tools.
Pre-production samples are always available before mass production;
Always carry out final inspection before shipment;
2. What can you buy from us?
Aluminum plate, aluminum coil, aluminum foil, carbon steel, alloy steel, stainless steel, copper galvanizing, etc
4. What services can we provide?
Accepted delivery conditions: FOB, CIF, FAS, DDP, express;
Accepted payment currencies: US dollar, Australian dollar, Euro and RMB;
Payment types accepted: T/T, L/C, MoneyGram, credit card, PayPal, Western Union remittance, cash;
5.After-sales service: 24-hour online maintenance guidance service.
6.Language: English, Chinese and Other.