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

Shandong Zhongrui Construction Machinery Co., Ltd official website!

National Service Hotline:
15005366588
ZRQ165B-DHD360 high wind pressure down-the-hole drill bit
ZRQ165B-DHD360 high wind pressure down-the-hole drill bit
 
 

ZRQ165B-DHD360 drill bit technical parameters

Model

Edge teeth

Middle tooth

Head structure

Number of exhaust holes

Number of splines

Weight kg

With impactor

ZRQ165B-DHD360

9-Φ18Q

9-Φ16Q

Plane

3

8

25

ZRC6

ZRC6A

DHD360

COP64

ZRQ165B-DHD360 drill bit features

 

ZRQ165B-DHD360 drill bit is a universal drill bit developed by our company according to the characteristics of domestic rock formations, and its side teeth are adopted

 

Nine 18mm alloys. Due to the use of 3 powder discharge troughs and the application of larger alloys, it is relatively

 

The service life and work efficiency of conventional ZRQ165G drill bits have been greatly improved.