Drill Pipe Pup Joint
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Drill pipe pub joints are made from AISI 4137 premium alloy steel and are precisely machined using advanced CNC equipment. All of the connections of the tool joint are phosphorized and lubricated to protect the threads. Each one of these drill string components is carefully inspected by a fluorescent magnetic particle and ultrasonic method. The pub joint are for pipes ranging from 2 3/8" to 6 5/8" of grades E75, G105 and S135. The oil pipe connections are EU, IEU or IU rated.
Specifications| Connection code | Nominal weight | Grade | Connection (in) | ID of connection(in) | Tool joint length male connection(in) | Tool joint length female connection(in) |
| NC31 | 10.4 | G105 | 4 1/8 | 2 | 7 | 9 |
| S135 | 4 3/8 | 1 5/8 | 7 | 9 | ||
| NC38 | 13.3 | G105 | 5 | 2 7/16 | 8 | 10 1/2 |
| S135 | 5 | 2 1/8 | 8 | 10 1/2 | ||
| NC46 | 16.6 | X95 | 6 1/4 | 3 | 7 | 10 |
| G105 | 6 1/4 | 3 | 7 | 10 | ||
| S135 | 6 1/4 | 2 3/4 | 7 | 10 | ||
| NC50 | 19.5 | X95 | 6 5/8 | 3 1/4 | 7 | 10 |
| G105 | 6 5/8 | 3 1/4 | 7 | 10 | ||
| S135 | 6 5/8 | 2 3/4 | 7 | 10 |
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