国产白丝视频在线播放-国产白袜-国产办公室秘-国产爆操美女五月天-国产播放隔着超-国产不卡

ZRQ140A1-DHD350 drill bit technical parameters

Model

Edge teeth

Middle tooth

Head structure

Number of exhaust holes

Number of splines

Weight kg

With impactor

ZRQ140A1-DHD350

7-Φ18Q

7-Φ14Q

Plane

2

8

16.1

ZRC5A

ZRC5

DHD350

COP54

ZRQ140A1Z-DHD350

7-Φ18Q

7-Φ14Z

Plane

2

8

16.1

ZRQ140A1-DHD350 drill bit features

The ZRQ140A1-DHD350 drill bit is based on the original ZRQ140A-DHD350 drill bit based on the characteristics of domestic rock formations by our company.

A general-purpose drill bit developed on the above, its side teeth are made of seven 18mm alloys to ensure the wear resistance and fracture resistance of the alloy

The cracking performance, while the large head adopts a flat layout, which effectively ensures the adaptability of the drill bit in various working conditions, and the drill bit body picks up

Using a special heat treatment process, it effectively reduces the probability of damage such as breakage and chipping, so that the life of the bit body and the alloy is prolonged

The effective matching is achieved, which reflects the characteristics of long life and high efficiency.