国产乱子伦高清露脸对白-亚洲人成精品久久久久桥本-国产 欧美 亚洲 中文字幕-国产又粗又猛又爽又黄的视频免费-无码国模大尺度视频在线观看-天天免费看av-亚洲色成人网站www永久男男-午夜宅男在线永久免费观看网-美国一级黄色毛片-偷窥自拍青青草-亚洲美女爱爱-国精品人妻无码一区二区三区喝尿-视频在线一区二区三区-中文字幕在线观看国产-91大神精品在线

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. .