

Coal auger drill bits
Type:Twist drilling tools
Steel grade:40Cr,42CrMo, 4140
Carbide: YG9C ,YG8C
Key words:
Coal Mining Tools
Product Details
Description
Eccentric tip and positive rake 38mm drill bit diameter.Robust two wing drill bit for dry drilling larger diameter holes in soft to medium conditions.The positive front rake assists in penetration with low thrust machines while the concentric tips minimizes drill rod wander.These drill bits have been designed for dry drilling in conjunction with scroll type drill rods. The bits have a round shank and a shoulder drive.The grade of tungsten carbide insert provides extremely good wear resistance and is time proven for all types of conditions.The drill bit body is made of high tensile material for strength and abrasion resistance.
Performance
strength and abrasion resistance.
Application
These drill bits have been designed for dry drilling in conjunction with scroll type drill rods.
Specification
According to the diameter and size of the wings,Coal auger drill bits specifications are divided into:Ф28 mm, Ф30 mm, Ф32 mm,38mm, Ф42 mm, Ф48mm.
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QUALITY INSPECTION PROCESS
Product quality is one of the core links in the development and growth of Yanggu Henglong Engineering Co., Ltd. Our company has strict internal and external inspection processes to ensure the quality of our products. Our inspection process for our products is as follows.

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