精品人妻久久久久久888,久久久久亚洲AV成人无码电影,亚洲免费在线不卡高清视频,中文无码一区二区不卡AV,精品国产你懂的在线观看,日韩精品中文字幕有码,在线看片日本一区二区,成a人片在线观看久亚洲,亚洲无AV码一区二区三区,国产高清精品在线一区二区

ZRQ216-DHD380 drill bit technical parameters

Model

Edge teeth

Middle tooth

Head structure

Number of exhaust holes

Number of splines

Weight kg

With impactor

ZRQ216-DHD380

10-Φ18Q

6-Φ16Q

Concave surface

2

10

50.4

ZRC8A

ZRC8

DHD380

COP84

8-Φ18Q

ZRQ216-DHD380 drill bit features

ZRQ216-DHD380 drill bit is a universal drill bit developed by our company according to the characteristics of domestic rock formations, and its side teeth are adopted

10 18mm alloys ensure the wear resistance and fracture resistance of the alloy. At the same time, the large head adopts a concave layout.

Effectively ensures the straightness of the drill bit during the drilling process, and the drill body adopts a special heat treatment process, which effectively reduces its

The probability of damage such as fracture and block collapse effectively matches the life of the bit body and the alloy, reflecting the high lifespan

And the characteristics of high efficiency.