CFA and CFA Starter

Product Item : DC_CFA
Category： Drill Bucket & Auger
Diameter Range: 300-1200mm
Length: 1, 2, 3, 4m etc.
Material: 25Crmo and Q345B
Thickness: 16, 20,25,30mm
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Fetures

1，Material: Q345B(ST52) and 25Crmo.
2，Replaceable rock polit with B47K22H round shank chisels or fisftail polit.
3，Progressive cutting edge with round shank chisels.
4，Wear protection: hard facing or wear strips

CFA Couplings

Specifications of CFA

CFA Kelly
Size(mm)	Diameter(mm)	Pitch(mm)	Thickness(mm)	Length(m)
300	280	280	16	2-10
400	380	300	16	2-10
500	480	350	16	2-10
600	580	400	20	2-10
700	680	400	20	2-10
800	780	500	20	2-10
900	880	500	25	2-10
1000	980	600	25	2-10
Other sizes can be customized
CFA Drill Head
Size(mm)	Diameter(mm)	Pitch(mm)	Thickness(mm)	Length(m)
300	280	280	16+20	2-10
400	380	300	16+20	2-10
500	480	350	20+25	2-10
600	580	400	20+25	2-10
700	680	400	20+25	2-10
800	780	500	20+30	2-10
900	880	500	20+30	2-10
1000	980	600	20+30	2-10
Other sizes can be customized