国产精品不卡av在线观看,久久综合九色综合欧美狠狠,又粗又长又硬义又黄又爽,久久精品国产欧美激情无码

ZRQ152-DHD360 drill bit technical parameters

Model

Edge teeth

Middle tooth

Head structure

Number of exhaust holes

Number of splines

Weight kg

With impactor

ZRQ152-DHD360

8-Φ16Q

4-Φ14Q

Concave surface

2

8

22.5

ZRC6A

ZRC6

DHD360

COP64

4-Φ16Q

ZRQ152-DHD360 drill bit features

ZRQ152-DHD360 drill bit is a universal drill bit developed by our company according to the characteristics of domestic rock formations, and its side teeth adopt 8

A 18mm alloy ensures the wear resistance and fracture resistance of the alloy. At the same time, the big head adopts a flat layout, which is effective

Ensure the adaptability of the drill bit in various working conditions. The drill body adopts a special heat treatment process to effectively reduce its breakage.

The probability of damage such as cracking and chipping makes the drill bit body and the alloy life match effectively, which reflects the high life and

High efficiency features.