成年男女免费视频网站,五月丁香亚洲综合无码,精品无码国产一区二区三区AV,亚洲人人妻偷人人

Shandong Zhongrui Construction Machinery Co., Ltd official website!

National Service Hotline:
15005366588
ZRQ152A-DHD350 high wind pressure down-the-hole drill bit
ZRQ152A-DHD350 high wind pressure down-the-hole drill bit
 
 

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. .

 

 
美丽人妻| 久久毛片免费观看| 欧美人与禽性xxxxx杂性| 日本精品中字a幕| 九色资源网| 亚洲曰韩一区| 精品久久久中文字幕人妻| 看久久久久久一级毛片| 51精产国品一二三产区区别| 亚洲色视频一区二区| 欧美成人免费一区二区| 99精品免费久久久久久| 成人一二区| 欧美亚洲三区| 最近韩国日本免费观看MV百度| 中文字幕人妻一区二区三区| 欧美日韩国产一区| 老司机精品123久久久| 波多野无码一区| 欧洲久久久久| 97精品伊人久久久大香线蕉 | 你懂的在线看| 精国产品一区二区三区| 少女视频哔哩哔哩免费版观看| 视频黄片日韩大片| 国产成人精品一区二三区浪潮| 日韩人妻在线| 国产亚洲精品久久久久| 欧美日韩精品在线| 日本乱中文字幕系列| 五月网| 欧美久久夜色| 午夜黄色影院| 涩丁香五月| 精品久久WW很屌| 在线观看国产成人AV天堂| 狠狠躁夜夜躁人人爽超碰女h| 欧美图片一区| 久久国产亚洲一区二区| 金门县| jizz无码|