| Customization: | Available |
|---|---|
| Standard: | RoHS, AISI, API |
| Usage: | Oil Mining, Coal Mining, Well Drilling, Ore Mining |
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| Brand Name: | ROSCHEN |
| Model Number: | 121mm |
| Type: | Drill Pipe |
| Machine Type: | Drilling Tool |
| Certification: | API |
| Material: | Chromium, 35CrMo/40Cr/4137H |
| Processing Type: | Forging |
| Use: | Well Drilling |
| Product name: | China API drill pipes tool joints for 2 3/8" to 6 5/8" pipes |
| Application: | Rock Drilling |
| Size: | 85mm 105mm 121mm 127mm |
| Connection type: | Male and female |
| Thread type: | NC26 NC31 NC38 NC46 NC50 NC56 |
| Special craft: | Hardening and tempering |
| Specification Drill Pipe Joint: | ||||||
| Drill pipe joint code | Drill Pipe | Drill Pipe Joints(mm) | ||||
| Spec. | Steel Grade | OD | ID of Pin Tap | Tong Space of Pan Tap | Tong Space of Box Tap | |
| NC26 | 2 3/8'' | DZ5O,R780 | 86 | 45 | 178 | 203 |
| 2 3/8'' | G105 | 85.7 | 44.5 | 178 | 203 | |
| NC31 | 2 7/8'' | ZD5,R780 | 104.8 | 50.8 | 232 | 280 |
| 2 7/8'' | G105 | 104.8 | 50.8 | 232 | 280 | |
| NC38 | 3 1/2'' | DZ50,R780 | 127 | 65.09 | 248 | 310 |
| 3 1/2'' | G105 | 127 | 61.9 | 248 | 310 | |
| NC46 | 4 1/2'' | DZ50,R780 | 158.8 | 82.6 | 236 | 320 |
| 4 1/2'' | G105 | 158.8 | 76.2 | 236 | 320 | |
| NC50 | 4 1/2'' | G105 | 168.3 | 86 | 236 | 320 |
| 5'' | DZ50,R780 | 168.3 | Ø89/82.6 | 236 | 320 | |
| 5'' | G105 | 168.3 | 82.6 | 236 | 320 | |
| Size | Length | N | M | H | Material | Weight(kg) |
| 57mm | 365 | 190 | 170 | 40+0.5 | 40Cr/35CrMu | 4.5 |
| 65mm | 410 | 235 | 195 | 40+0.5 | 40Cr/35CrMu | 6.5 |
| 70mm | 410 | 235 | 195 | 40+0.5 | 40Cr/35CrMu | 7 |
| 75mm | 440 | 260 | 215 | 50+0.5 | 40Cr/35CrMu | 9 |
| 80mm | 440 | 260 | 215 | 50+0.5 | 40Cr/35CrMu | 10 |
| 105mm | 540 | 280 | 350 | 55+0.5 | 40Cr/35CrMu | 20 |
| 121mm | 530 | 280 | 350 | 65+0.5 | 40Cr/35CrMu | 25 |
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