The Alloy Bit For Coal Mining

Description：

QNT27 H16 drill bit is the inner hexagon coal bit, it is made by alloy steel and steel. It has lower cost and suit for soft formation hole drilling in coal mining.

Features：

1.Alloy bit is made by superior steel;
2. It is wear-resistant and high impact toughness

Application:

The Alloy Bit for coal mining widely used in coal mining and ore mining;
Specification:

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