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4 inch PDC drill bit
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Product: Views:2534 inch PDC drill bit 
Unit price: Negotiable
Delivery date: Since the payment date Days delivery
Valid until: Long-term effective
Last updated: 2019-07-17 00:26

Product Introduction

The 4 Inch Drill Bit is brazed from a PDC tool to a steel body or matrix body. The drill diameter is typically 2 inches (50 mm) to 8 1/2 inches (216 mm). Compared to tungsten carbide drills, PDC drills have higher drilling efficiency and longer service life. Commonly used diameters are 76mm, 90mm, 100mm, 127mm, 146mm, 153mm, 216mm. The hort parabolic crown profile and medium cutter density make it can be used on rotary or down hole motor. Its under-cut shank maximizes junk slot area for better bit cleaning. And its has hign filt nozzles to improve hydraulics and Rop. Our 4 Inch Drill Bit is also surfable for soft to medium formation. It is one of our best-selling products.


The 4 inch drill bit has a high quality. It has the hardness and wear resistance of diamond, and also has the strength and impact resistance of the tungsten carbide alloy structure. The life of the PDC drill bit is several times that of the cemented carbide drill under the same conditions. The 4 inch drill bits can greatly reduce the drilling rate, and the average time efficiency can be increased by more than 2 times, reducing the construction intensity of workers, which guarantee high efficiency. It also has a wide application range that it can have rock formation penetration of f≤18.


The 4 Inch Drill Bit is suitable for rock formations below f18, such as granite, limestone, sandstone, mudstone, etc. Mainly used for coal mining, water wells, geothermal wells, drilling, geological exploration, drainage holes, gas drainage holes, blast holes, etc.

How to Choose the Right PDC Bit?

1. Tell us what diameter you want to drill.

Then we can know which size drill is right for you.

2. Tell us what rock formation you want to drill.

Then we can know which PDC bit is right for you.






Rock Formations





API Thread

f below 18, like granite, limestone, sandstone, mudstone, etc.

Coal mining, water well, geothermal well, geological exploration, borehole, gas drainage hole, discharge water hole, blast hole, etc.

We can also produce and design according to each customer's drawings/samples/requirements.


PDC (Polycrystalline Diamond) Cutter & Carbide Steel


Each pc is wrapped in a bubble film and then placed in a carton or wooden box.