The CFA system is made of intermediate sections of continuous augers ending by a head auger, connected together and to the rotary of the drilling rig by quick coupling hexagonally joints.
The formed column has a continuous hollow stem to inject concrete when the pile is bored.
The CFA head auger is equipped with teeth for soft soils or round shank bits for rocky soils. It ends with a straight or side concrete releaser.
CFA sections and head augers are available in different sizes.