Product Introduction
Application Scenarios
1.Processing workpieces: large-diameter steel pipes, oil casings
2.Processing technologies: inner wall quenching, outer wall quenching and overall tempering heat treatment of steel pipes Large Diameter Steel Pipe Induction Heating Equipment is specially developed for heat treatment processing of thick-walled large-diameter pipes.
Power Supply and Production Capacity Parameters
1.Quenching power supply: 750KW-3500KW, frequency 0.5KHz-4KHz
2.Tempering power supply: 400KW-1600KW, frequency 0.5KHz-2.5KHz
3.Hourly output: 2.5 tons to 10 tons
Machinable Size Range
The equipment processes steel pipes with outer diameter ranging from φ320mm to φ1000mm
Conveying Roller Drive Structure
1.Operating principle: The rotation speed of steel pipes is higher than the conveying speed of support rollers
2.Function: Correct pipe shape and improve straightness of finished steel pipes
Product system

Feeding Drive Control System
1.Drive configuration: Each conveying shaft is equipped with an independent motor and reducer
2.Electric control: Each shaft is regulated by a separate frequency converter
3.Speed adjustment: Custom speed difference between shafts and segmented speed control for the whole line

Intelligent Formula Management System
1.System function: Built-in complete program for storing and recalling process formulas
2.Operation: Input production parameters including steel grade, pipe outer diameter and wall thickness
3.Automatic operation: The system calls the full set of matched operating parameters automatically
4.Labor saving: No manual recording, searching and parameter input for different workpieces

Multi-loop Closed-Loop Stabilization Control System
1.Design orientation: Adapt to sites with unstable power grids in underdeveloped regions
2.Automatic control modules: High-precision closed-loop temperature and voltage regulation units
3.Voltage tolerance: Stable operation under power grid fluctuation of ±20%
4.Processing stability: Consistent heat treatment process parameters and uniform performance of mass-produced products
Core Advantages
- Wide size coverage for pipes from φ320 to φ1000, realizing one-stop quenching and tempering for oil casings and large-diameter steel pipes
- Wide power range with separated power ratings for quenching and tempering, hourly output of 2.5-10 tons to match production lines of different scales
- Optimized roller rotation speed difference reduces straightening workload in subsequent procedures
- Independent variable frequency drive for each shaft enables flexible speed difference setting and segmented line speed regulation for stable conveying
- Automatic formula recall reduces manual operation errors by loading matched processes after basic pipe data input
- Strong anti-interference performance via multi-loop closed-loop control, ensuring stable mass production even in locations with ±20% power voltage fluctuation
Why choose us?
Independent R&D & Production
Hebei Yuantuo Electromechanical independently develops and manufactures complete machines, power supplies and control systems. Core parts of Large Diameter Steel Pipe Induction Heating Equipment are self-produced with full quality control.
Rich Practical Project Cases
We have numerous mature mass-production cases for φ320-φ1000 oil casings and large steel pipes, capable of handling complex working conditions.
Customized Non-standard Solutions
We adjust machine structure and programs based on workshop space, output, voltage and pipe materials to deliver tailored complete sets of Large Diameter Steel Pipe Induction Heating Equipment.
High Operational Stability
The unit works stably under ±20% voltage fluctuation. Fitted with industrial-grade components for long service life and low maintenance cost.




Cooperative Client




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