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High Duty OCTG Production Line Thread Make-up Bucking Unit,Large Torque Capacity Bucking Equipment

Equipment Composition

  • Main Mechanical Structure
  • Hydraulic System
  • Torque & Detection System
  • Drive & Transmission Assembly
  • Electrical Control System
  • Auxiliary Parts
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Product Introduction

Overview

Our OCTG Production Line Thread Make-up Bucking Unit is custom-engineered to perform high-precision make-up and breakout for casings, tubings, drill pipes and premium threaded OCTG couplings. Widely adopted in pipe mills, OCTG finishing workshops and downhole tool service yards, it fully meets the torque criteria defined by API 5CT and API 7K industrial standards.
Two installation options are provided: stationary floor-mounted type and split portable type, covering a wide diameter range from small-bore tubing to large-diameter heavy-wall casing. Three optional core clamping structures include wedge roller clamping, full rotary hydraulic clamping and planetary jaw clamping. The unit is compatible with standard round threads, as well as high-performance gas-tight premium connections like VAM, Hydril and other patented special threads.
Adopting closed-loop hydraulic drive and PLC+HMI intelligent control system, the equipment automatically monitors torque, rotation turns and angular displacement in real time throughout the entire thread make-up and breakout process. All test data is automatically logged and saved in the local database, enabling full production traceability and permanent archiving of quality documents.
It supports manual, semi-automatic and fully automatic operation modes. Such flexible design fits both sporadic repair and maintenance work and high-capacity continuous 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

About GH-Petro

GH-Petro supplies customized ERW & OCTG pipe mill solutions.We combine domestic craftsmanship and international leading technologies to deliver high-quality equipment and reliable services.

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Order Process

1️⃣ Send Your Inquiry
Tell us your product needs and order details.

2️⃣ Confirm the Solution
We recommend the right product and confirm the price.

3️⃣ Production & Quality Check
We arrange production and check the quality before delivery.

4️⃣ Shipping & Support
We ship the goods and provide after-sales support.

Simple. Fast. Reliable.
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Frequently Asked Questions

We are a professional manufacturer and we could supply customized mill for ERW pipes and full-range OCTG pipes to meet your request,which include Entry Section,Forming&Sizing,Solid State HF Welder,Straightening Machine,Cold Flying Saw,End Facing Machine,Hydro-tester,UT Flaw Detection Machine,Threading Machine,Bucking Machine and Pipes Packing Machine.
MOQ is flexible for us and one set is feasible.Of course our team also could supply you a complete solution according to your request.
All kinds of our equipment are designed for producing pipes meeting API 5CT, API 5L, ASTM, EN, ISO and GB standards, suitable for oil & gas, pipeline, structural and industrial pipe applications.
Yes. We offer full turn key solutions including process design, equipment manufacturing, installation guidance, commissioning, operator training and after sales service.
Absolutely. Our heat treatment and forming systems are specially engineered for high strength steel grades required for deep well oil and gas OCTG pipes.
T/T, L/C at sight are available. Flexible payment terms can be discussed for large scale turn key projects.
We provide 12 month warranty for core components from the date of shipment, with lifelong technical consultation and spare part supply service.

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