DTH hammer and tube drilling technology is a drilling method that combines the speed advantage of air DTH hammer drilling and the advantage of casing wall protection that is conducive to the stability of the borehole wall. When drilling, the eccentric drill is thrown out when the eccentric block is rotated forward. The diameter of the thrown eccentric drill is larger than the diameter of the...

DTH hammer and tube drilling technology is a drilling method that combines the speed advantage of air DTH hammer drilling and the advantage of casing wall protection that is conducive to the stability of the borehole wall. When drilling, rock drilling machine is thrown out when the eccentric block is rotated forward. The diameter of the thrown eccentric drill is larger than the...

DTH hammer and tube drilling technology is a drilling method that combines the speed advantage of air DTH hammer drilling and the advantage of casing wall protection that is conducive to the stability of the borehole wall. When drilling, the eccentric drill is thrown out when the eccentric block is rotated forward. The diameter of the thrown eccentric drill is larger than the diameter of the...