8 1/2 inch well drilling HDD cuttter bit,roller cone cutter,tricone bit

Product Description    Specifications of 8 1/2'' TCI Drill Bit    

Specification
Bit Size	8 1/2''--215.9mm
Bit Connection	4 1/2'' API Reg.
Bit Tooth Type	Tungsten Carbide Inserts, IADC537
Bearing Type	Sealed Roller Bearing
Seal Type	O-ring Seal
Make up Torque	46.1~54.2 N.M
Nozzle Q'ty	3 NZ
Operating Parameter
Weight on Bit (Kn)	0.35~1.05
Rotary Speed (RPM)	110~40

   Mainly for the reamer bits       Packaging & Shipping       Our Services     Company Information   Hebei Ranking Bit Manufacture Co,LTD is mainly engaged in the development of various series of bits,development,production and sales. 
Ranking company has developed and mass-produced products 3 inches to 26 inches series steel rock bit,various types of PDC bits,core bit and production and processing assembly 0.6m to 3m large diameter hole openers.Widely used in the oil,natural gas,hydrology,address,ore drilling engineering,product marketing the country and 20 countries and regions in the world.  Tricone bits and cutters Seal and other cutter accessories Roller Cutters for Raise Boring and Reverse Circulation Drilling Rotary Roller Bits for Core Barrel  Foundation Drilling Bits,bits holders,welding bar,bucket teeth,trench cutters Mining Bits,bits holer,knife teeth  Rock drilling tools,button bits,pdc bits Road milling bits,bits holder Dredging cutters