Hexagonal hollow steel B22 drill pipe

Product model: QSAAA, QSAA
Our company’s shank tip angle is 7°. For deep holes greater than 2.5 meters, a nested tapping method is required. That is, use a short tapping hole first, and then use a long tapping hole to continue the hole. This can greatly improve the service life of the shank.

Performance characteristics
Select the appropriate drilling rod based on the hardness of the construction rock.
Our company’s shank tip angle is 7°. Users need to choose a corresponding tapering bit to use.
For deep holes greater than 2.5 meters, nested tapping is required. That is, use a short tapping hole first, and then use a long tapping hole to continue the hole. This can greatly improve the service life of the shank.
During the drilling and continuous process, pay attention to stability, adjust the appropriate air flow, and prevent the shank from bending. Otherwise, it will shorten the service life of the shank.
According to the on-site conditions, for rock layers that are prone to snag, ten-dot bits or adjusting the tapping machine air flow should be selected to ensure normal blasting and drilling.