Is there really no dust in the drilling process?
The main construction steps of the full casing construction method are similar to those of the mud wall, except that no mud and clear hole are required.
The general construction process is: flat site, laying the work platform, installation of drilling rig, pressure casing, drilling into the hole, placed steel cage, put the catheter, pouring concrete, drawing casing, check the quality of piles.
Concrete drilling machine (diamond) in the drilling process is really no dust, mainly dust fainted cup absorption layer of mud; concrete drilling machine full casing construction method of construction sequence.
The verticality of the press-fit sleeve depends on the verticality of 5 to 6 m deep at the beginning of the excavation.
