成人午夜精品无码区久久青龙-成人午夜精品无码区久久樱花影视-成人午夜精品无码区毛片四季视频-成人午夜精品无码区全集观看-成人午夜精品无码试看120秒-成人午夜精品无码网站

ZRQ235-DHD380 drill bit technical parameters

Model

Edge teeth

Middle tooth

Head structure

Number of exhaust holes

Number of splines

Weight kg

With impactor

ZRQ235-DHD380

12-Φ18Q

6-Φ16Q

Concave surface

2

10

55

ZRC8A

ZRC8

DHD380

COP84

8-Φ18Q

ZRQ235-DHD380 drill bit features

ZRQ235-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

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

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.