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Steel body concave type 3-wing PDC drill bits with 3 blades, tungsten carbide wear pads, and rope thread are specifically designed for hard rock applications.

Description:

1. These PDC concave drill bits are primarily intended for drilling in soft to medium formations such as mudstone, limestone, shale, sandstone, and granite.

2. They are suitable for various drilling tasks including hydrogeological exploration boreholes, gas drainage holes, agent plug-holes, and grouting boreholes, particularly in medium-hard to hard rock formations.

3. These drill bits operate efficiently under low drilling pressure, medium-low drive speed, and facilitate efficient drainage.

Features:

1. Equipped with well-designed wing drill bit gauges made of cemented carbide, ensuring high hardness, excellent wear resistance, and good toughness. Even under temperatures ranging from 500 to 1000 degrees Celsius, the hardness remains intact. This design choice can help reduce overall drilling costs.

2. Featuring three or five water holes, these drill bits effectively cool the PDC cutter and flush out mudstone debris from the drilling head, reducing downtime and enhancing on-field efficiency.

3. Incorporating two 1308 PDC cutters for the pillar and two middle water holes, these drill bits efficiently cool the PDC cutters while simultaneously clearing mudstone debris, thereby preventing damage to the compact (PDC cutter) components.

In summary, the steel body concave type 3-wing PDC drill bits with tungsten carbide wear pads and rope thread offer exceptional durability and performance in hard rock applications, making them a reliable choice for various drilling operations.