Our Company

DOI BK

We support maintaining optimal performance
through various part replacements and repairs,
ensuring meticulous care.

Product

A company providing innovative technology to customers

Chamfer Cutter & Bit for Marine Applications

Final finishing of mining drill bits

Efficient drilling through customized manufacturing 

Features excellent durability

Complete production of all material parts and case (body)

 

Part

Type

Hardness Range

Application

R-CUTTER K / UF 91~93

Tungsten chamfer

C-CUTTER K / UF 91~93

Tungsten chamfer

Rotary Bur

EF 91

Tungsten chamfer

본문

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