Hole opener ranging from 16 to 66 that is divided into two types: MT cutter and TCI cutter, and is used in various compressive strength of the formations. The product is used for the reaming of the oil, gas, petrochemical, sewage, power and fiber optic pipelines in the no-dig horizontal directional drilling.

Directional crossing operation is widely used in unexcavated project. Three steps in such operation are: 1, oriented hole operation; 2, hole opening; 3, pipe pulling. Hole opening is the most onerous task in this operation, but, the key for hole opening operation is the hole opener choosing according to the operation equipment and formation.

Small torque force can be applied to hole opening with drilling machine.

Hole opener includes body and the cutter. 4 different types of cutter can be assembled to the body in one size for opening the hole in 4 sizes.

Cutter can be divided into MT type used in soft formation and TCI type used in hard formation. Huanyu Hole opener takes its advantages in its better teeth distribution, wearing resistance ability, bigger cutting area and higher efficiency.

Inner and outer anti-drop device are applied in the hole opener to reduce the dropping accident of cutter under bad drilling environment.

Roller bearing and bigger section are applied in cutter and rubber seals improving the running life of the hole opener.

Oriented piece on the body for guiding and support, wearing resistance alloy on the surface improve the ability of wearing resistance and shock resistance.