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

Shandong Zhongrui Construction Machinery Co., Ltd official website!

National Service Hotline:
15005366588
ZRQ225-DHD380 down-the-hole drill bit
ZRQ225-DHD380 down-the-hole drill bit
 
 

ZRQ225-DHD380 drill bit technical parameters

Model

Edge teeth

Middle tooth

Head structure

Number of exhaust holes

Number of splines

Weight kg

With impactor

ZRQ225-DHD380

10-Φ18Q

7-Φ16Q

Concave surface

2

10

52.8

ZRC8A

ZRC8

DHD380

COP84

8-Φ18Q

ZRQ225-DHD380 drill bit features

 

ZRQ225-DHD380 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

 

10 18mm alloys ensure the wear resistance and fracture resistance of the alloy. At the same time, the large head adopts a concave layout.

 

Effectively ensures the straightness of the drill bit during the drilling process, and the drill body adopts a special heat treatment process, which effectively reduces its

 

The probability of damage such as fracture and block collapse effectively matches the life of the bit body and the alloy, reflecting the high lifespan

 

And the characteristics of high efficiency.

 

 
主站蜘蛛池模板: 2022色婷婷综合久久久 | 我把我的肥岳日出水来多少集 | 亚洲国产中文字幕 | 激情又色又爽又黄的A片 | 日本波多野结衣在线 | 日本中文字幕永久在线 | 天天操夜夜操视频 | 亚洲精品蜜夜内射 | 嗯宝贝叫的再浪一点 | 成人一级黄色毛片 | 中文字幕亚洲码 在线观看 中文字幕无线观看在 | 成年在线观看免费高清完整版视频 | 久久天天婷婷五月俺也去 | 六月丁香婷婷综合 | 日本黄页88网成品网站 | 把女人弄爽大黄A大片片 | 麻豆 一区 精品 在线 | 亚洲AV国产精品无码精 | 欧美ZC00O人与善交 | 日产精品乱码卡一卡2卡三 日产精品卡二卡三卡四卡乱码视频 | 色老头成人免费综合视频 | 久久久精品3d动漫一区二区三区 | 扛起老师雪白双腿进入小说 | v在线| 国产精品美女免费视频观看 | 疯狂揉小泬到失禁高潮在线 | 欧美夜夜噜2024最新 | 久久精品国产精品亚洲艾 | 色中色网址导航 | 樱花草社区WWW视频在线观看高清 | 乱小说录目伦合集 | 人人欧美| 少妇高潮毛片免费看A片 | 九九视频免费观看 | 国内外成人色情视频 | 国产成人福利免费视频 | 国产看片网站 | 精品无码国产一区二区日本 | 最美情侣中文第4季 | 日韩视频二区 | 狠狠色噜噜狠狠狠888奇米 |