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 indust...
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