Our company manufactures a complete line of rotary subs. Each sub provides a connection between joints of different size or type of drilling, washover, or tubing strings. Cross-over subs may be used in applications when it is necessary to have frequent disconnection points. All Cross-over subs are manufactured from high-alloy, heat treated steel and thread to the customer's specifications. Subs can be ordered pin-to-pin, box-to-box, or box-to-pin and are available in lengths up to 96 inches. Right or Left-hand threads can be provided.
There are A type (same diameter),B type (different diameter) and C type (levoform).
Denotation | Upper Connection Part | Lower ConnectionPart | Type |
Kelly Cross-overJoint | Kelly | Drill pipe joint | A or B |
Drill Pipe Joint | Drill Pipe Joint | Drill Pipe Joint | A or B |
Crossover Joint | Kelly | Drill Collar | A or B |
Drill CollarJoint | Drill Collar | Drill Collar | A or B |
Bit Joint | Drill Collar | Bit | A or B |
Swivel Joint | Swivel Lower Joint | Kelly | C |
Fish Joint | Kelly | Drill Pipe Joint | C |
Drill Pipe Joint | Fishing Tool | C |
External Thread | Internal Thread | ||||||||
Thread Code Name | Tapering | Large End Diameter | Small End Diameter | I.D. (mm) | Thread Code Name | Tapering | LargeEnd Diameter | Small End Diameter | I.D. (mm) |
1.900TBG | 1:16 | 48.3 | 47 | 40.3 | 1.900TBG | 1:16 | 55.9 | 66.1 | 49.9 |
2-3/8TBG | 1:16 | 60.3 | 59 | 40.3 | 2-3/8TBG | 1:16 | 73.0 | 58.1 | 61.9 |
2-7/8TBG | 1:16 | 73 | 70 | 62 | 2-7/8TBG | 1:16 | 88.9 | 70.8 | 74.6 |
3-1/2TBG | 1:16 | 88.9 | 86 | 76 | 3-1/2TBG | 1:16 | 108.0 | 86.7 | 90.5 |
4TBG | 1:16 | 101.6 | 98 | 88 | 4TBG | 1:16 | 120.6 | 98.5 | 103.2 |
4-1/2TBG | 1:16 | 114.3 | 111 | 100.3 | 4-1/2TBG | 1:16 | 132.1 | 111.2 | 115.9 |
4-1/2BCSG | 1:16 | 114.7 | 112 | 100 | 1.900UPTBG | 1:16 | 63.5 | 51.0 | 54.8 |
1.900UPTBG | 1:16 | 53.2 | 51 | 40.3 | 2-3/8UPTBG | 1:16 | 77.8 | 62.8 | 67.5 |
2-3/8UPTBG | 1:16 | 65.9 | 64 | 50.3 | 2-7/8UPTBG | 1:16 | 93.2 | 75.5 | 80.2 |
2-7/8UPTBG | 1:16 | 78.6 | 76 | 62 | 3-1/2UPTBG | 1:16 | 114.3 | 92.2 | 96.9 |
3-1/2UPTBG | 1:16 | 95.2 | 92 | 75.9 | 4UPTBG | 1:16 | 127.0 | 104.9 | 109.6 |
4UPTBG | 1:16 | 108.0 | 104 | 88.6 | 4-1/2UPTBG | 1:16 | 141.3 | 117.6 | 122.3 |
4-1/2UPTBG | 1:16 | 120.6 | 117 | 100.3 | |||||
