The body of the Barrel hdd reamer is made of high-quality alloy steel, which is quenched and tempered.
One-piece mandrel, with special wear-resistant alloy cutting teeth, the drilling speed is faster, and the internal water separation compartment design makes it lighter in weight and less torque under the action of mud buoyancy in the cavity, which is more effective in preventing Formation of pear-shaped pores.
According to various strata, straight cylinder sections of different lengths are designed to make the hole forming effect better.