Hejian Huanyu Petroleum Machinery Co., Ltd. in China. Was established in 1998.
1)Product :we specializes in manufacturing:Tricone bits,steel tooth bit,milled tooth tricone bit,tungsten carbide insert rock bit,tri-cone drill bit ,3 cone bits,rotary bit, TCI tricone bit,PDC drill bit ,diamond core bit,bicenter bit,single cone bit , reamer bit,down hole opener,hole enlarger,drag bit,button bit ,drill pipe,drill collar ,mud pump and drilling equipment for petroleum&gas ,water well ,mining and tectonic industries ,oil field, construction, geothermal, directional boring, and underground foundation work all over the world. 
Our products not only won the trust of domestic clients, but also are exported to Canada ,USA,Middle East,South Africa in the international market .

2) API and ISO certificate
3)we are a global wholesale supplier of tricone bit, and PDC bits and core bits in the gas, oil and mining industries. 
4)Size range: from 2 7/8 to 26" 

Skype:huchunyi9
Telephone:+86-18713746034-null
Phone:+86-317-3231326
Fax :+86-317-33231326

we also sell kingdream ,CS,Lilin brand bits .

We have branch office in Dubai ,it makes easier for us to buy used bits from all the countries .

we are the global buyer and have bought the second-hand tricone bits and PDC bits from Iran ,Dubai(UAE),Saudi Arabia,Syria,Egypt,Greece and so on .

if you sell used tricone bits and scrap PDC bits ,please feel free to contact me .

Tel:0086-317-3231326
mobile:0086-18713746034