国产成熟人妻换╳╳╳╳-日韩人妻无码一区二区三区-日韩精品一区二区亚洲av观看-人妻夜夜爽天天爽三区丁香花-九一九色国产-a级国产乱理论片在线观看

ZRQ152A-DHD350 drill bit technical parameters

Model

Edge teeth

Middle tooth

Head structure

Number of exhaust holes

Number of splines

Weight kg

With impactor

ZRQ152A-DHD350

8-Φ18Q

8-Φ14Q

Plane

2

8

16.2

ZRC5A

ZRC5

DHD350

COP54

ZRQ152A-DHD350 drill bit features

The ZRQ152A-DHD350 drill bit is a universal drill bit developed by our company based on the characteristics of domestic rock formations. Its side teeth use 8 18mm alloys to ensure the wear resistance and fracture resistance of the alloy. At the same time, the large head adopts a flat layout, which is effective To ensure the adaptability of the bit in various working conditions, the bit body adopts a special heat treatment process, which effectively reduces the probability of damage such as breakage and chipping, so that the bit body and the alloy life are effectively matched, which reflects the characteristics of high life and high efficiency. .