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| Place of Origin | Germany |
| Brand Name | ROSCHEN |
| Certification | ISO |
| Model Number | API Drill Pipe |
Mining Tunneling 3 1/2 INCH API Drill Pipe
Drill Pipe Description:
1. Our Drill Pipe are of the highest quality ,are manufactured to exacting specifications using advancing maching technoogy.
2. They are manufactured from seamless steel tube by cold drawn.The material is XJY850/30CrMnSiA which meets the global standard.
3. Drill rods are made from quality heat treated materials which ensure superior strength, wear resistance and toughness in the most demanding applications
4. Rods and casing are manufactured under stringent industry standards, and are field tested under a variety of conditions.
5. All rods are designed to be compatible with other rods manufactured to the standard DCDMA
Drill Pipe Specifications:
| Short section of oil pipe | Specification (in) | Maximum outer diameter(in)(mm) | Wall thickness(mm) | Steel Grade | ||
| Flat | External upset | |||||
| 2 3/8 | 2.375(60.33) | 2.594(65.90) | 0.190(4.83) | J55 N80 L80 |
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| 2 7/8 | 2.875(73.03) | 3.094(78.60) | 0.217(5.51) | |||
| 3 1/2 | 3.500(88.90) | 3.750(95.25) | 0.254(6.45) | |||
| Coupling | Specification (in) | Maximum outer diameter(in)(mm) | Minimum length(in)(mm) | Steel Grade | ||
| Flat | External upset | Flat | External upset | |||
| 2 3/8 | 2.875(73.03) | 3.063(77.80) | 4 1/4"(107.95) | 4 7/8"(123.83) | J55 N80 L80 |
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| 2 7/8 | 3.500(88.90) | 3.668(93.25) | 5 1/8"(130.18) | 5 1/4"(133.35) | ||
| 3 1/2 | 4.250(108.00) | 4.500(114.30) | 5 5/8"(142.88) | 5 3/4"(146.05) | ||
| Adaptor | Different kinds of adaptor connectors of J55' N80' L80 Adaptor Coupling | |||||
Drill Pipe Pictures
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