HJ Assembling bit for oil and gas drilling
Available sizes:From 2 7/8 to 26"
Available sizes:From 2 7/8 to 26"
Advantage:most favourable price and high quality
Bearing type: sealed bearing and non-sealed bearing
metal sealed journal bearing
rubber sealed journal bearing
Cutting structure:The back cone and the teeth all surface is are hardfaced strengthening, improved steel tooth shape and welding materials,showing teeth higher
Application formation: Medium formations with high compress strength, such as medium soft shale, hard gypsum , medium soft limestone, medium soft sandstone, soft formation with harder interbed, etc.
