The material of this product are the 55 sinomo hollow hexagon bar iron. The specification: 0.5, 0.8 meter, 1 meter to 6 meter etc., each kind of specification is complete.

1, Light weight (lighter than the old-fashioned drill pipe 45%)
2, Footage soon, dust small vertical holes left after drilling cuttings, into a hole clear.
3, Card beans quickly and easily connect and save banding material.
4, Under separation of body and drilling may be the end, the use of life extended.
5, water-based wet good pass operation.