medium-hard formation tooth bits the 127 bits are used to drill high-compressive strength,medium hard formations,short projection teeth with reduced crest lenght are used in this series of bit designs.durable hard facing is applied to reduce tooth wear.
cangzhou great pdc bits co.,ltd
Contact
Person:
ying chen
Phone:
86-0317-3212988
Fax:
86-0317-3212998
Zip code:
062450
Address:
junziguan industrial development zone,hejian,hebei
steel tooth bits 127 
