Overview
This Casing and Tubing Bucking Machine is custom-engineered for high-precision makeup and breakout operations of casings, tubings, drill pipes and premium threaded OCTG couplings. Extensively deployed in pipe mills, OCTG finishing workshops and downhole tool service yards, it fully complies with the torque requirements stipulated in API 5CT and API 7K industry specifications.
Two installation configurations are offered: a stationary floor-mounted model and a split portable variant, accommodating an extensive diameter spectrum ranging from small-bore tubing to large-diameter heavy-wall casing. Three core clamping mechanisms are available as optional selections: wedge roller clamping, full rotary hydraulic clamping and planetary jaw clamping. The equipment is fully compatible with standard round threads, together with high-performance gas-tight premium connections such as VAM, Hydril and other patented special threads.
Powered by a closed-loop hydraulic system and equipped with a PLC+HMI intelligent control system, the machine realizes real-time automatic monitoring of torque, rotational turns and angular displacement during the whole thread makeup and breakout cycle. All test parameters are automatically recorded and stored in the local database, achieving complete production traceability and permanent archiving of quality records.
Three operating modes are supported: manual, semi-automatic and fully automatic. This flexible setup adapts perfectly to occasional maintenance tasks as well as high-volume uninterrupted mass production on dedicated production lines.
Equipment Composition
Main Mechanical Structure
- Heavy-duty base frame: available in stationary floor-mounted type and split portable type for flexible installation scenarios
- Rotary spindle assembly & main drive head
- Multiple optional clamping assemblies: wedge roller clamping unit, full rotary hydraulic clamping unit, planetary jaw clamping unit
- Travelling carriage and longitudinal sliding feed mechanism
- Inlet and outlet pipe support roller stands
- Full-enclosure safety protective cover
Hydraulic System
- Centralized hydraulic power pack
- Hydraulic cylinders for clamping, feeding and material pushing functions
- Closed-loop proportional control valves for precise torque adjustment
- Hydraulic oil tank, heat exchanger, oil filtration units and complete connection piping
Torque Testing & Real-Time Detection System
- High-accuracy torque transducer
- Rotary revolution and angle encoder
- Pressure monitoring sensors & displacement monitoring sensors
Drive and Transmission Unit
- Hydraulic motor matched with reduction gearbox assembly
- Torque feedback transmission mechanism
- Positioning brake assembly
Electrical Control System
- PLC control cabinet
- HMI touchscreen operation interface
- Embedded data acquisition & logging module to realize full production traceability
- Travel limit switches, emergency stop pushbuttons and safety interlock protection devices
Auxiliary Functional Components
- Centralized automatic grease lubrication system
- Cable trunking system and insulated protective wiring ducts
Our Advantages
- Precise torque & angle closed-loop control, ensures API standard qualified threaded connection for OCTG casing and tubing
- Large clamping range, compatible with various OCTG pipe sizes, grades and thread types
- Stable hydraulic driving system, effectively avoids thread galling, deformation and damage during make-up
- Automatic pipe centering device, solves pipe bending deviation, guarantees coaxiality of threaded joints
- Human-machine touch screen operation, stores multiple make-up parameters for quick model switching
- Heavy-duty rigid frame structure, long service life, low failure rate and easy daily maintenance
- Real-time data recording and printing function, traceable bucking records for quality inspection
- High bucking efficiency, perfectly matched with OCTG heat treatment & threading production line
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