科普盘点幸运飞行艇官方开奖直播 幸运168**开奖结果直播 168飞艇开奖**结果 幸运飞行艇168体彩开奖网 查询现场开奖直播 168官方历史开奖记录 体彩网 开奖结果 **开奖视频直播 号码查询 历史记录 正规**开奖网址 Your one-stop destination for insider beauty secrets, product reviews, and more—all vetted by our editors and the industry's top pros.。

ZRQ165-DHD350 drill bit technical parameters

Model

Edge teeth

Middle tooth

Head structure

Number of exhaust holes

Number of splines

Weight kg

With impactor

ZRQ165-DHD350

8-Φ18Q

8-Φ16Q

Concave surface

2

8

17

ZRC6

ZRC6A

DHD360

COP64

ZRQ165-DHD350 drill bit features

ZRQ165-DHD350 drill bit is a kind of general purpose drill bit developed by our company according to the characteristics of domestic rock formations. Its side teeth are mining

Using eight 18mm alloys to ensure the wear resistance and fracture resistance of the alloy, and the large head adopts a concave layout.

The straightness of the drill bit during the drilling process is effectively ensured, and the bit body adopts a special heat treatment process, which effectively reduces the amount

Its breakage, collapse and other damage probability make the drill bit body and alloy life matched effectively, reflecting the high lifespan

The characteristics of life and high efficiency.