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Factory High Quality Down The Hole Hard Rock Drilling DHD380 Shank 279mm Convex-Concave Face 11&quot

  • Brief info:Factory High Quality Down The Hole Hard Rock Drilling DHD380 Shank 279mm Convex-Concave Face 11" DTH Drill Bit, US $ 500 - 2,100 / Piece, Energy & Mining, Hunan, China, New Diamond.Source from Hunan New Diamond Construction Machinery Co., Ltd. on
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Factory High Quality Down The Hole Hard Rock Drilling DHD380 Shank 279mm Convex-Concave Face 11" DTH Drill Bit


Carbide button shape selection:

1. Domed/Round Button
2. Parabolic/Semi-Ballistic Buttons
3. Ballistic Button
4. Sharp Button
5. Flat Button

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Our advantages:

We have advanced production equipments & talented researchers & technicians & rich experiences in R & D and production.
We use the best quality raw materials.
We adopt advanced production technology & strict testing procedure.
We passed ISO9001 quality management system certification.
We accept OEM manufacturing and produce on your design.

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