C3 series rope drilling tool standards and parameters
NO.	Standard	Description Code	Bit outer diameter (mm)	Bit inner diameter (mm)	Weight (kg)
1	NC3	SZJ-NC3-3000	75.3	45.0	64.8
2	HC3	SZJ-HIC3-3000	95.6	61.1	100.49
3	PC3	SZJ-PC3-3000	122.0	83.0	135. 29
4	SC3	SZJ-SC3-3000	147.6	102.0	196.14

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