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GYD Series Single-cone Rock Bits For Oil-well Drilling GYD Series Single-cone Rock Bits For Oil-well Drilling Fixed Diameter Hole Opener Fixed Diameter Hole Opener Canned Motor Pump Canned Motor Pump 5000m digital-control VF electric rig [ Conventional Drilling - 5000 Meters ] 5000m digital-control VF electric rig [ Conventional Drilling - 5000 Meters ] Universal Isolates Pipe Connection Universal Isolates Pipe Connection
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