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Type:blade model with steel body
Size:75-270(mm)
Application: This group of products is used to penetration the degassing hole, drain hole, and grouting hole of coal mine. It has two types, one is steel body, the other is matrix body. Matrix body Suitable for hard rock, the bits life span is two times than the steel body.
Characteristics: Compared with the others, this one has a higher abradability and wide range of application, suitable for drilling in the middle hard rock and soft rock. Applicable rock formation: f≤6.