标签存档： H35 drill rod
https://www.rockdrillingtools-china.com/wp-content/uploads/2017/07/1800-1200.jpg
1200
1800
sdrocktool
https://www.rockdrillingtools-china.com/wp-content/uploads/2017/03/LOGO-300x125.jpg
sdrocktool2017-07-09 21:25:462018-02-25 12:32:14Drifter rod H35 drifting drill rod quality improvement project