What kind of pile driver, rotary drilling machine can drill under medium weathering rock layer?
The Xugong power head, wylong machinery mechanical lock rod rotary drilling rig Yuchai engine and can be weathered rock and sediment layer in the layer below, backfill soil drilling construction
The Xugong power head, wylong machinery mechanical lock rod rotary drilling rig Yuchai engine and can be weathered rock and sediment layer in the layer below, backfill soil drilling construction
The Xugong power head, wylong machinery mechanical lock rod rotary drilling rig Yuchai engine and can be weathered rock and sediment layer in the layer below, backfill soil drilling construction
