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| Price | USD+1000-2000+set |
| MOQ | 1set |
| Delivery Time | Negotiable |
| Brand | jthl |
| Place of Origin | Beijing |
| Certification | ISO |
| Model Number | 800,1000,1200,1500,2000 |
| Packaging Details | exported standard package |
| Payment Terms | L/C, D/A, D/P, T/T, Western Union |
| Supply Ability | 1000+set +year |
| Usage | rotary drill rig | Place of Origin | Beijing |
| Packaging Details | exported standard package | Material | Q355d |
| Model Number | 800,1000,1200,1500,2000 | Supply Ability | 1000+set +year |
| Feature | suitable for hard ground | Certification | ISO |
| Brand Name | jthl | Payment Terms | L/C, D/A, D/P, T/T, Western Union |
| Type | core barrel with roller bits | Price | USD+1000-2000+set |
| Minimum Order Quantity | 1set | Oem/odm | Welcome |
| kelly box | 130,150,200,250 | Application | gravel foundation |
2. Cutting ring with roller bits and releases the internal stress of rock;
3. Drilling with the method of rolling and squeezing can increases the anti-wear ability of the barrel;
4. medium or slightly weathered rock, hard or super hard bedrock;
| Core barrel with roller bits Model | ||||||||
| Cutting Dia. | Shell HIT. | Shell OD. | Shell THK. | Stiffening Ring THK. | Stiffening Ring HIT. | Teeth No. | Weight | |
| φ600 | 1200 | 520 | 20 | 20 | 200 | 4 | 545 | |
| φ800 | 1200 | 720 | 20 | 20 | 200 | 6 | 725 | |
| φ900 | 1200 | 820 | 20 | 20 | 200 | 6 | 810 | |
| φ1000 | 1200 | 920 | 20 | 20 | 200 | 8 | 900 | |
| φ1200 | 1200 | 1120 | 20 | 20 | 200 | 9 | 1080 | |
| φ1500 | 1200 | 1420 | 20 | 20 | 200 | 10 | 1370 | |
| φ1600 | 1200 | 1520 | 25 | 25 | 200 | 10 | 1460 | |
| φ1800 | 1000 | 1720 | 25 | 25 | 200 | 12 | 1830 | |
| φ2000 | 800 | 1920 | 25 | 25 | 200 | 13 | 2050 | |
| φ2200 | 800 | 2120 | 25 | 25 | 200 | 14 | 2090 | |
| φ2500 | 800 | 2420 | 25 | 25 | 200 | 15 | 2420 | |
| φ2800 | 800 | 2720 | 25 | 25 | 200 | 16 | 3000 | |
| φ3000 | 800 | 2920 | 25 | 25 | 200 | 18 | 3500 | |
| Remark: Size refers to diameter of bore hole, all measurements in millimeters (mm); weight in kilograms(kg); | ||||||||
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