Interlocking Kelly Bar For CASA Drilling Rig Mait Hitachi Rotary piling rig

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Interlocking Kelly Bar For CASA Drilling Rig Mait Hitachi Rotary piling rig

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Interlocking Kelly Bar For CASA Drilling Rig Mait Hitachi Rotary piling rig

1,Performance and characteristics: FRICTIONAL KELLY BAR: It is the drill pipe that transmits the axial pressure through the friction force between the layers of rods when the rotary excavator is ...

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