roof bolt bit

hole opener(1)
pdc bit(1)
roof bolt bit(1)

Hejian Ouman Mining Bits Co., Ltd.

All Products >> roof bolt bit

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pdc roof bolting bit
Specification: 40mm
Detail: Mainly used in anchor net supporting hole drilling of the coal mining, providing a powerful guarantee for the fast and efficient roadway excavation. This type you saw is for drilling coal. The size is 25mm, 27mm, 28mm, 30m...


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Hejian Ouman Mining Bits Co., Ltd. All Products >> roof bolt bit

Hejian Ouman Mining Bits Co., Ltd.

All Products >> roof bolt bit