About

Suitable for special drilling operation in soft to medium soft formations (f =1~5).
● Features
Carbide bits have a simple structure with low operation cost and high drilling efficiency.
● Sizes
Ordinary steel bits: Φ75, Φ94, Φ113, Φ133, Φ153
Plug-in type of casted steel spiral bits:Φ75～Φ150 (For special drilling operation of gas drainage boreholes in the coal seam) Large diameter bits for rescue: Φ300, Φ450, Φ600 ( Specially for across roadway and rescue borehole drilling operations).
Drill Bits for sale
website:http://www.xianccteg.com/drill-bits/

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