Standard and parameter of C2 series rope drilling tool
NO.	Standard	Description Code	Bit outer diameter (mm)	Bit inner diameter (mm)	Weight (kg)
1	BC2	SZJ-BC2-3000	59.5	40.7	32.32
2	NC2	SZJ-NC2-3000	75.3	50.8	59.53
3	HC2	SZJ-HC2-3000	95.6	66.0	94.35

Technical exchange

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Bit Selection in Soft Rock Formation

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