Roschen group limited is a professional supplier of drilling tools. With years of study and refining of the introduced technology, our products own better characters of service and ranges of application.Mainly used for oil and gas,mining,geothermal,construction and so on.Our products have been sold all over the world, including the United States, England, Canada, Brazil, Russia, Italy, Iran, Saudi Arabia, Korea, India, South Africa, Australia, Chile, Peru, Argentina, Poland, Thailand, and so on.
A drag bit is a drill bit usually designed for use in soft formations such as sand, clay, or some soft rock. However, they will not work well in coarse gravel or hard rock formations. Uses include drilling water wells, mining, geothermal, environmental and exploration drilling. Whenever possible, they should be used to drill pilot holes because they produce cuttings that are easiest to log.
Drag bits have a wide range of drilling applications including environmental, exploration, geothermal, water well, road construction, and natural gas and oilfield drilling.
Features:
1. Step Drag Bits also named blade bits, with a Tungsten Carbide inserts on the blades.
2. They are usually designed for use in soft formations such as sand, clay, or some soft rock.
3. Their uses include drilling water wells, mining, geothermal, environmental and exploration drilling.
4. Whenever possible, they should be used to drill pilot holes, for they produce cuttings are easiest to log.
5. Normally drag bits are 3 wings, but we can make 4 or 5 wings following your drawings or samples.
6. Many special designs are available upon your request.
| Bit Size |
Pin Type |
| 2-3/4″ - 3-1/2″ |
4 THD N-ROD |
| 3-5/8″ - 4-3/4″ |
2-3/8″ API PIN |
| 4-7/8″ - 5-1/8″ |
2-3/8″ API PIN |
| 5-1/4″ - 5-1/2″ |
2-3/8″ API PIN |
| 5-5/8″ - 6″ |
2-3/8″ API PIN |
| 6-1/8″ - 6-1/4″ |
2-3/8″ API PIN |
| 6-1/2″ - 6-3/4″ |
2-3/8″ API PIN |
| 5-1/2″ - 6-3/4″ |
3-1/2″ API PIN |
| 6-7/8″ - 7-7/8″ |
3-1/2″ API PIN |
| 8″ - 9″ |
3-1/2″ API PIN |
| 9-1/8″ - 10-7/8″ |
3-1/2″ API PIN |
| 7-7/8″ - 8-7/8″ |
4-1/2″ API PIN |
| 9″ - 9-7/8″ |
4-1/2″ API PIN |
| 10″ - 10-7/8″ |
4-1/2″ API PIN |
| 11″ - 12-1/4″ |
3-1/2″ OR 4-1/2″ API PIN |
Audited Supplier 
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