1. Drill bits drill bits and PDC bits which used on the oilfield and water well, the sizes: 5 7/ 8" --17 1/ 2" ( both insert drill bits and steel tooth bit) 2.Drill pipe Accord with API 5D....
Shijiazhuang Longway Drill Tools company is a group company established in 1990.We own ourselves Three factories specialize in producing drill pipes, tricone bits, PDC bits , casing pipe, steel....