8 1/2''--17 1/2'' steel tooth tricone bit

1.used for oil field and waterwell 2.good quality .reasonable price.140USD/PCS 3.good performance

model                   114-117,127,437,517,617,637 Type                    Tricone bits,Steel tooth bits,PDC bits Appliable             water well, oil field, construction, geothermal, directional boringFormation           sticky,soft,medium hard,hard formation Bearing               rubber seal or metal seal Paking                wooden box,steel box,or as your requirements Payment Term     T/T,L/C MOQ                   1 Piece Supply Ability      5000 Pieces/month Delievery Time    within 15 days

TCI bits series437 Soft Formation TCI Tricone Bits The 437 TCI bits are used to drill low compressive strength,very soft formations.TCI bits maximize the use of both conical and chisel tungsten carbide inserts of large diameters and high projection.This cutting structure design,combined with maximum cone offset ,result in high bit penetratione rates.The deep intermesh of cutter rows prevents bit bailing in sticky formations.517Medium Formation TCI Tricone BitsThe 517 features aggressive chisel tungsten carbide insert on the heel rows and inter rows.This design provides a fast drilling rate and added cutting strcture durability in medium-to-medium hard for-mationes.The HSN rubber O-ring provides adequate sealing for bearing durability.637Hard Formation TCI Tricone Bits The 637 bits can be used to drill hard and abrasive forma-tions.Wear-resistant tungsten carbide inserts are used in the outer rows to prevent loss of bit gauge.Maximum numbers of hemispherical-durability and long life.617Medium-Hard Formation TCI Tricone BitsThe 617 feature robust chisel tungsten carbide inserts on the heel row and conical on the inner rows.This design provides a fest drilling rate and added cutting structure durability in medium to medium hard formations.The HSN rubber O-rin provides adequate sealing for bearing durability

8 1/2''--17 1/2'' steel tooth tricone bit