少妇人妻一级A毛片无码,亚洲国产成人精品女人,无码人妻精品一区二区三区蜜桃91,高清无码视频在线观看,国产婬片lA片www777

ZL138B full hydraulic open-air crawler drilling rig is suitable for various rock drill 64-102 mm drill blasting holes, the optimal holes size is 76-89 mm. It’s drilling equipment for water and electricity, railway, traffic, open-air mine, quarry, national defence engineering and various kinds of large construction projects.

Features:

1. ZL138B full hydraulic open-air crawler drilling rig is equipped with DZYG38B type hydraulic rock drill and     multidimensional positioning drilling arm

2. High drilling efficiency, 1-1.5 times higher than the same kind of drilling rig;

3. Low energy consumption, lower than the same kind of pneumatic drilling rig 1/3- 2/3;

4. Stoutness structure, compact layout, passing ability, good cross-country performance;

5. Applicability is wide and equipped with all kinds of selected device, can be combined according to the different     operation conditions

6. Safety of operation, low dust, low noise.

7. Equipped with automatic protection card brazing equipment

8. With the installation of all-weather operation room and mechanical in brazing