Changsha Sollroc Engineering Equipments Co., Ltd
FOCUS IN MANUFACTURING OF HIGH QUALITY DTH AND RC DRILLING TOOLS.
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(178mm) 7'' Drag Bit With 3 1/2'' API REG Pin Thread For Geothermal Drilling
Product Introduce
3 wings step drag bits are one piece construction of alloy steel cast with tungsten carbide cutting tips and gauge sides to ensure longer life. It has 3 wings and 3 flushing holes. Compared with 4 wings, 3 wings step drag bits tend to drill faster and aggressive, whereas, are shorter lasting and less durable.3 wings step style drag bits will produce larger cuttings force than chevron style drag bit. Rotary table speed ofstep drag bits should be between 60 and 80 rpm with light weight on bit.
Techinical parameter
| Type | Dimension | Thread connection | |
| inch | mm | ||
| 3 wings step type | 2 - 17 1/2 | 51-445 | 2 3/8'' - 6 5/8'' API REG |
| 3 wings chevron type | 2 1/2 - 8 | 64-203 | 2 3/8'' - 4 1/2'' API REG |
| 4 wings step type | 7 7/8 - 17 1/2 | 200-445 | 3 1/2'' - 6 5/8'' API REG |
| 4 wings chevron type | 2 5/8 - 12 | 67 - 305 | 2 3/8'' - 4 1/2'' API REG |
Adavantages
1. bits' body and wings are integrated casting instead of welding them together ;
2. Copper brazing tungsten carbide insertion welding technology instead of silver soldering. Copper brazing make the tungsten carbide very hard to drop and break.Meanwhile ,in the brazing process,the wings also get a good hot treatment.
3. Use high grade carbide inserts only;
4. More steps, faster penetration ;
5. Thickened wings.
Design features
Design of super-large outlet, smooth outlet, no blockage, no drilling and no washing
Utonomous design of threads to suit all drill pipe interfaces
Repeated grinding, repeated chemical treatment, dust-free welding composite
Detail Photos:
About us
At sollroc, customer satisfaction is our top priority. Our sales team takes a proactive approach in meeting customers’ needs. We take the time to get to know you and learn about your operations so we can better assist you. We strive to meet customers’ needs by supplying the tools and equipment you need when you need them, providing product support, and following through with excellent customer service every step of the way.
Package:
Wooden cases or your required
Delivery Time
Generally need 15-20 days
Transport Way
By air, By Sea or By Express