hjbits
                     hjbits
http://www.hjbits.com/
About 
Us
Haojiang Drilling Tools Co., Ltd.is a professional  
manufacturer that mainly produces tri-cone drill 
bits for  petroleum development drilling, water 
well, coal field  exploration, engineering 
development and other  purposes, and other 
types of rock crushing tools. The  company was 
transformed into a private company in  2004. 
The company's original manufacturing base was 
in  Qingpu, Shanghai. In order to 
comprehensively improve  the company's 
product quality, the production base has  been 
relocated to Jinxi Town, Kunshan City, Jiangsu  
Province.
DRILL PRODOCTS WE 
HAVE
TCI Rock Roller Bits 12 Single Roller Cone Bits Steel Tooth Tri-cone Bits
1/4″
Bullet Teeth for Drilling Bucket PDC Bit Tricone drill bit 6 3/4 ” 171.5 
mm
+86 19814593758
http://www.hjbits.com/
Jinshun Road,Jinxi Town,Kushan 
City,Jiangsu,China