DONGWOO MACHINERY CO., LTD.

We are specialized in manufacturing down the hole hammer bit since 1990. Our manufacturing skills, quality control and constant efforts of development

CD Hammer (Cluster Drill Hammer) is the one of our best-selling product, which we invented and patented. CD Hammer was invented to minimize noise and

DongWoo Machinery is specialized in manufacturing DTH (Down the Hole) Hammer Bit since 1990. Our manufacturing skills, quality control and constant e

Overburden Drill Bit is manufactured to support the foundation of working site to prevent collapse while drilling. ODB can be utilized with Casing w

Overburden Drill Bit is manufactured to support the foundation of working site to prevent collapse while drilling. ODB can be utilized with Casing w

CD Hammer Bit is to replace the Standard Bit to minimize noise and vibration where have ground disturbance and complaints are filed. If you need more

RC Type CD Hammer (with wide diameter of 1500mm, 2000mm or 2500mm) is specialized in drilling on particular construction sites where they have strict

Auger Bit Auger Bit is designed to utilized in worksites where is consisted of soil and sand so the hammering isnt necessary. Large Diameter Ring Bi

Auger Bit Auger Bit is designed to utilized in worksites where is consisted of soil and sand so the hammering isnt necessary. Large Diameter Ring Bi

DongWoo Machinery has been manufacturing Bits with outstanding quality and experience. We are proud of drilling speed and durability of out Bits. Bits