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oilfield drill bitsHejian Huanyu Petroleum Machinery Co., Ltd. in China. Was established in 1998.
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 ,RR BIT,ROCK ROLLER BIT,diamond core bit,bicenter bit,single cone bit , reamer bit,down hole opener,hole enlarger,drag bit,button bit ,Blast hole drilling,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.
We also buy used and scrap pdc bit,tricone bits.
Skype:huchunyi9 email:hjhyjx at yahoo dot cn mob:0086-18713746034
