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Customized Turnkey Induction Heating Machine is a fully tailored, ready-to-operate solution designed to meet the specific heating requirements of various industrial applications. These machines are developed to handle a wide range of processes, including hardening, forging, annealing, brazing, soldering, and melting, offering both flexibility and precision. A turnkey system includes all the necessary components, such as power supplies, coils, automation controls, and safety features, ensuring seamless integration into your production line.

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Applications:

Induction Hardening: Surface hardening of components like gears, camshafts, and axles to improve wear resistance and durability.

■ Induction Forging: Heating metal billets or bars for forging applications in industries like automotive, aerospace, and heavy machinery.

■ Induction Annealing: Softening metals to enhance ductility for forming, machining, or stress relief in wires, tubes, and strips.

■ Brazing and Soldering: Joining metal components with high precision and minimal thermal distortion, often used in electronic components, plumbing, and HVAC systems.

■ Induction Melting: Melting metals such as steel, aluminum, and copper for casting and alloy production.


Duolin, founded in 1994, is a trusted manufacturer of induction heating machines and solutions, with over 20 years of industry experience. Offering equipment with power ranges from 4-2000KW and frequencies from 0.5-400KHz, all products are designed by Duolin's expert engineering team and produced under strict ISO9001:2015 standards. As a high-tech enterprise, Duolin holds more than 20 national patents, providing energy-efficient and reliable induction heating systems for industries worldwide.


Duolin's induction heating solutions are widely used for applications such as carbon steel hot forginggear shaft hardeninglong bar heat treatmentpipe heating for hot bending, and non-ferrous metal heating like aluminum and copper. Since expanding internationally in 2007, Duolin has established agents in countries like Brazil, Germany, and India, with end users in over 15 countries, some of whom have been partners since 2009.


  • Induction Coil&Inductor

    Induction Coil&Inductor

    With induction heating system, coil design will responsible for engineer who have more than ten year of experience in coil making.

  • Closed Type Water Cooling

    Closed Type Water Cooling

    Cooling water shall be free from impurities. DOT NOT use well water or river water. To prevent the scale formation, ensure good cooling result, and greatly reduce the failure rate, Soften Water or Distilled Water are strongly recommended as cooling water for induction equipment.

  • DI Water Cooling System

    DI Water Cooling System

    Cooling water shall be free from impurities. DOT NOT use well water or river water. To prevent the scale formation, ensure good cooling result, and greatly reduce the failure rate, Soften Water or Distilled Water are strongly recommended as cooling water for induction equipment.

  • Vehicle Parts Connection Rod Hot Forging

    Vehicle Parts Connection Rod Hot Forging

    Induction hot forging is the most common heating application for induction heating,end hot forging for fasteners manufacture,complete billet heating for hot stamping in vehicle parts industry etc

  • Automatic Induction Hardening

    Automatic Induction Hardening

    DUOLIN Induction hardening is the most common form of induction heat treatment. It is widely used on shaft, gear, pipe .pin and other part in automotive industry.

  • Pipe Bending Project with BYD

    Pipe Bending Project with BYD

    In 2018, we received bid for BYD auto for induction pipe bending project, they want to expand their steel structure factory for hot pipe&tube bender industry, to get new increasing profit because the order for auto industry decrease recent year.

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Contact Us

+86 28 8393 0607

+86 158 8242 2821

112th Hancheng Road Xindu Industrial Zone Chengdu China

Why Duolin

DUOLIN has been founded in 1994, now is a professional factory to develop, design and manufacture Induction Heating Equipment. We are cencentrating on the improve of IGBT Induction Heating Technology for 30years, has installed thousands of Induction Heating Process for hot forging, induction hardening, long bar/threaded rod heat-treatment and induction pipe bending, Induction elbow...

Rich Experience

Rich Experience

More than 20 years of experience in induction heating industry

Free Test

Free Test

Free test for choosing the machine model before purchase

Design and Development

Design and Development

Product design research develop and maintain by the Duolin Engineer team, machine lifetime service

Quality Control

Quality Control

Test the machine as customer heating requirements and aging more than 6 hours to guarantee the good quality

Installation Guide

Installation Guide

Offer installation manual and troubleshooting guide

Brand Raw Materials

Brand Raw Materials

Use famous brand components Infineon Omron Schneider to ensure quality of material

China supplies induction heating power supply Questions and Answers:

What is your nature of your company: Dealer or factory?

DUOLIN is an old brand for induction heating equipment in China. We have own factory,bought the land and built the factory, not rent. 79 employees, it is large-scale company in chinese induction heating machine factory.

How about the delivery time and stock?

We have machine in stock for HFP-20 and SSF model, need about one week for coil making, test the machine and package.

For medium frequency big power machine, it is the customized model, production time is around 1 month.

Which port for export?

We can send machine to any port in China, but normally Shenzhen, Shanghai, Ningbo, Guangzhou, we will arrange things under customer instruction. 

How to install your machine?

Offer customer pictures, videos and document for installation. Engineer are available if customer need help to install in the factory.

What is your advantage?

International trade since 2009, manufacture induction heating machine since 1996, much experience in induction heating. All the products are research, design and develop by the Duolin engineer team, electric engineer, mechanical engineer, coil design engineer, application engineer..

Which countries your products are exported to?

More than 56 countries installed more than 3000 set machine, agent in 10 countries.

Customized Turnkey induction heating machine

Customized Turnkey induction heating machine

Provide solution according to your requirement, well match with your production line

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