BZU NZU Core Barrel

Description
ZU core barrel is suitable for drilling in tunnels. It is a superior tool for site investigation in soft to hard formations.

Features
1. It can drill holes upward or horizontally.
2. It has fast penetration speed compared with thicker wall core barrels.
3. ZU core barrel is suitable for various rock formations.
4. This core barrel offers higher percentage of core recovery and less erosion of core.
5. In addition to water and polymer, mud and air can be used for flushing.
6. This cost-effective core barrel has high productivity in shallow formations.

Working Principle
By water pressure, ZU core barrel is sent to the bottom of the hole, and then begin drilling work. It is also equipped with a special water swivel and other auxiliary tools when working. At the end of the work, by the water pressure, ZU overshot is sent to catch hold of ZU head assembly and take the core barrel out of the hole.

CDG is a main manufacturer and supplier of drilling tools in china. Our company is specialized in designing and manufacturing premium diamond drilling tools for geotechnical/mining/oil exploration and hydrapower station grouting project. Main products cover impregnated synthetic diamond core bits, surface-set diamond bits, PDC core and noncoring bits, rod shoes & casing shoes, reaming shells, drill rods, wireline core barrels (such as ZU core barrel), overshots, water swivels, hoisting plugs, casing cutter assembly, adapter subs, wrenches, recovery tools and foot clamps. 80% of our products are sold abroad.