四川少妇bbw搡bbbb槡bbbb,你多宠着我小说全文免费阅读,亚洲在线精品中文字幕,电影网经典三级,深夜免费在线观看视频www色,开讲啦苏有朋,亚洲美女在线视频观看,麻花传媒md034苏蜜清歌,无遮挡成人肉动漫在线观看,春闺密事 秦兮免费阅读

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. .