900mm cfa auger with  CFA octagonal connector sw250  match Liebherr-LRB355 drill rig for cfa pile
450mm cfa auger with  CFA octagonal connector sw150  match Liebherr-LB20 drill rig for cfa pile
Running a 600 mm Continuous Flight Auger (CFA) on a Liebherr-LB28 rotary drilling rig utilizes the CFA-AU Ø 600 SW 175 auger series equipped with a 175 mm octagonal connection system.
Auger Tool Specifications (CFA Ø 600)
Parameter
Technical Value
Auger Outer Diameter
600 mm
Connector Joint
SW 175 (175 mm Octagonal)
Hollow Stem Outer Diameter
254 mm
Concrete Pipe Inner Diameter
125 mm (5 in)
Flight Pitch
450 mm
Max Torque Rating
250 kNm
Max Pull Force Rating
650 kN
Standard Segment Lengths
1.0 m, 2.0 m, 3.0 m, 5.0 m, 10.0 m
Drill Head & Assembly Accessories
Starter Head Assembly: Heavy-duty head fitted with a central fishtail pilot bit to ensure drill alignment.
Cutting Tools: Tungsten-carbide round shank chisels (e.g., C31HD / B47K) for hard gravel/soft rock, or flat teeth for cohesive clays.
Flap Valve: Bottom-discharge steel flap valve or rubber cap to prevent soil ingress into the hollow stem during penetration.
Auger Cleaner: Mast-mounted sleeve cleaner matching 600 mm diameter flighting to clear drill spoil during extraction.
1,SPECIFICATION

Materials:q355b , coupling:35crmo
Tianjin huachang xingye technology co ltd
CFA piles are constructed by rotating a hollow stem continuous flight auger into the soil to a designed depth. Concrete or grout is pumped through the hollow stem, maintaining static head pressure, to fill the cylindrical cavity created as the auger is slowly removed. The reinforcement cage is placed through the freshly placed concrete. Typically,  CFA piles are reinforced with a rigid six metre-long cage as a minimum, but it's possible to install much longer cages as and when required by the design or specification. If required, a specially developed vibrator unit can help accurately locate the reinforcement cages.
Advantages
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