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high pressure tungsten carbide DTH drilling hammer use CIR90 rock drill button bit

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high pressure tungsten carbide DTH drilling hammer use CIR90 rock drill button bit

1. professional rock drill bits manufacture

2. material of high quality steel

3. meterial of high abrasion resistant cemented carbide

4. advanced heat treatment technics

5. professional vacuum sintering technique

6. factory direct sales with competitive price

7. sufficient stock with full types

8. perfect after sales service

 

 

 

 

 

 

 

 

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