ST350 Deep Drilling Crawler Mounted Drill Rig ST 350 Crawler Mounted Drill Machine Introduction Water collecting drill, gas drill function in one of the medium, efficient, multi-functional drilling and drilling ... Read More
4 wings pdc bits Product Description 1. The bit is suitable for soft to medium soft formations. 2. Cutting structure is force balanced, bit blade is asymmetrically designed, and spiral blade and spiral gage are ... Read More