Shijiazhuang Zhongmei Coal Mine Equipment Co., Ltd.

drill bit

drill bit
Product Detailed

for drilling the rock with hardness f 10
high-grade diamond segment material
super hardness and good toughness

 

1.better drilling efficiency

 high-grade diamond segment material

 

2. longer service life 

 super hardness and good toughness

 

3. lower cost.

 

 



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