Test location:                     Shanxi              

Project:                               Iron ore exploitation

Nature of rock:  Iron Ore - medium-hard rock

Drill rig model:   Atlas Copco Boomer281

Specifications of test product:     Thread button bit: 45-R32 (semi-ballistic)

Total drilled depth:                          400m

Depth of single hole:       3m

Customer feedbacks: Kemaico drill bit drilled about 400m deep at this test. For the first 30 holes, the average time was 2.5min/hole, it slowed down after drilled 30 holes and the average time is 3.83min/hole. The product quality is pretty good in same kind of products.