Features：
Cylinder ring cut to release the pressure around the rock.
Toothed teeth are rolled and ground for drilling, with low tooth wear.
High coring rate with small drilling tools, large drilling tools are graded to match the crushing.
Applicable stratum: medium and slightly wind stratum, hard rock stratum, ultra-hard bedrock stratum.
Spectrum table：
| Cutting diameter | Cylinder height | Cylinder outer diameter | Cylinder wall thickness | Thickness of reinforcing ring | Reinforcement ring height | Number of teeth | Weight |
| φ600 | 1500 | 500 | 20 | 40 | 300 | 4 | 690 |
| φ800 | 1800 | 700 | 20 | 40 | 300 | 6 | 1050 |
| φ900 | 1800 | 800 | 20 | 40 | 300 | 8 | 1180 |
| φ1000 | 1800 | 900 | 20 | 40 | 300 | 8 | 1270 |
| φ1200 | 1800 | 1100 | 20 | 40 | 300 | 10 | 1650 |
| φ1500 | 1800 | 1400 | 20 | 40 | 300 | 14 | 2070 |
| φ1600 | 1800 | 1500 | 20 | 40 | 300 | 14 | 2250 |
| φ1800 | 1500 | 1700 | 20 | 40 | 300 | 16 | 2480 |
| φ2000 | 1500 | 1900 | 20 | 40 | 300 | 18 | 2910 |
| φ2200 | 800 | 2100 | 25 | 40 | 300 | 20 | 2700 |
| φ2500 | 800 | 2400 | 25 | 40 | 300 | 24 | 3000 |
| φ2800 | 800 | 2700 | 25 | 40 | 300 | 26 | 3800 |
| φ3000 | 800 | 2900 | 25 | 40 | 300 | 28 | 4300 |
Remarks: All units of measurement are in millimeters (mm); weight units are in kilograms (kg).
Customizable items：
Cutting diameter customization: design the cutting diameter according to the customer's demand, such as φ950, φ1050, etc., which is mostly used in conjunction with casing construction.
Cylinder height customization: design the cylinder height according to the customer's demand, such as raising the height to 1500, 2000, to increase the single drilling volume and improve the construction efficiency.
Customization of weight structure reinforcement: according to the customer's needs to strengthen the parameters of each part, such as wall thickness, bottom plate thickening, etc.;
Customization of the type of tines: the new tines are designed according to the customer's needs.
Customized tines: new oil tines, used tines and removable tines can be customized according to customers' requirements.
Customized size of square head: the size of square head of drilling tools can be customized according to the square head of customer's drill pipes, usually 130x130, 150x150, 200x200, etc.
Customize the number of teeth: according to the customer's demand, we can arrange the teeth according to the customer's demand.
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