1 More than 20 years of experience in induction heating industry.
2 Free test for choosing the machine model before purchase.
3 Product design research develop and maintain by the Duolin Engineer team,machine lifetime service.
4 Test the machine as customer heating requirements and aging more than 6 hours to guarantee the good quality.
5 Offer installation manual and troubleshooting guide .
6 Use famous brand components Infineon Omron Schneider to ensure quality of material
  • China Wholesale Induction Metal Heater Pricelist - Closed type – Duolin

    China Wholesale Induction Metal Heater Pricelist - Closed type – Duolin

    Closed type 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. Water or air cooling is very important for induction heating device, improves reliability of induction heating equipment, ensure the induction machine working long time and stable. it is easy to insta...
  • China Wholesale Induction Brazing Power Supply Factories - DI water cooling system – Duolin

    China Wholesale Induction Brazing Power Supply Factories - DI water cooling system – Duolin

    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. PH: 7-8.5 Suspended solids<10mg/L Hardness<60mg/L Conductivity<500μA/cm3 Chloride ion:Average<60mg/L Sulfate ion<100mg/L Iron<2mg/L Solubilitysio2<6mg/L Dissolved solid<300mg/L ...
  • China Wholesale Induction Forging Technology Manufacturers - Closed type – Duolin

    China Wholesale Induction Forging Technology Manufacturers - Closed type – Duolin

    Closed type 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. Water or air cooling is very important for induction heating device, improves reliability of induction heating equipment, ensure the induction machine working long time and stable. it is easy to insta...
  • China Wholesale Oem High Frequency Induction Heating Furnace Pricelist - Long bar heat treatment machine – Duolin

    China Wholesale Oem High Frequency Induction Heating Furnace Pricelist - Long bar heat treatment machine – Duolin

    Products Description Long bar heat Treating is induction heating for bar hardening and tempering. Heat treatments available by induction hardening and tempering system, process includes heating and quenching, tempering and stress Relieving. Duolin long bar heat treating line can process bar diameter from 6-100mm, length from 1000-14000, meet small & big production capacity. Feature Environmentally-friendly:The main power for the induction heat treatment line is electric...
  • China Wholesale Induction Brazing Power Unit Pricelist - induction hardening machine – Duolin

    China Wholesale Induction Brazing Power Unit Pricelist - induction hardening machine – Duolin

    Products Description Induction hardening  is a form  of heat treatment in which a metal part is heated by electromagnetic induction and then quenched, increase the hardness and brittleness of metal part. Induction hardening equipment is widely used for the surface or inner hardening of steel. Induction hardening process can be done in two different ways: static and scan hardening Advantages of Induction hardening • No physical contact hardening • Scan/ Stationary hardening • Short t...
  • China Wholesale Industrial Heating Systems Pricelist - High frequency induction heating machine HGP-50 – Duolin

    China Wholesale Industrial Heating Systems Pricelist - High frequency induction heating machine HGP-50 – Duolin

    Products Description Power 30-300KW Work  Frequency 50-250Khz Digital display Constant power and current output Safe,Low voltage output PLC interface available for automatic work Wide inductance to connect with different heating coil 8 fault indicators to protect machine Water cooled induction power unit and transformer Technical parameter Model HGP-30 HGP-50 HGP-100 Rated Power Output 30KW 50KW 100KW Working Frequency 50-250Khz 200-400Khz 50-130Khz ...
  • China Wholesale Bolt Induction Heating Machine Pricelist - Ultrasonic frequency induction heating machine – Duolin

    China Wholesale Bolt Induction Heating Machine Pricelist - Ultrasonic frequency induction heating machine – Duolin

    Ultrasonic induction heating equipment IGBT inverter used,high efficiency and low energy consumption Can work continuously with 100% duty cycle and set up 100% at any load Can replace convention heating method such as heating by flame coal salt bath gas and oil Work frequency 10-30Khz,power 30-250KW Digital display and compact design,light weight,easy for installation and operation Soft switch technology and prefect protection system enhance good reliability. Can equipped with infrared t...
  • China Wholesale Induction Brazing Equipment Quotes - Closed type – Duolin

    China Wholesale Induction Brazing Equipment Quotes - Closed type – Duolin

    Closed type 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. Water or air cooling is very important for induction heating device, improves reliability of induction heating equipment, ensure the induction machine working long time and stable. it is easy to insta...
  • China Wholesale Indution Hardening Generator Manufacturers - Long bar heat treatment machine – Duolin

    China Wholesale Indution Hardening Generator Manufacturers - Long bar heat treatment machine – Duolin

    Products Description Long bar heat Treating is induction heating for bar hardening and tempering. Heat treatments available by induction hardening and tempering system, process includes heating and quenching, tempering and stress Relieving. Duolin long bar heat treating line can process bar diameter from 6-100mm, length from 1000-14000, meet small & big production capacity. Feature Environmentally-friendly:The main power for the induction heat treatment line is electric...
  • China Wholesale Bolt Heating Machine Manufacturers - High frequency induction heating machine HFP-20 – Duolin

    China Wholesale Bolt Heating Machine Manufacturers - High frequency induction heating machine HFP-20 – Duolin

    Product Detail Power 7KW work frequency 50-100Khz Digital display and foot switch for easy cooperation Time set available for auto and manual work model 4 Fault indicators protecting and instructing easier to repair machine PLC interface available for automatic work The first generation of Duolin induction heating machine,stable and durable High frequency light weight and small size Power supply 220V single phase,home use is OK and easy for cooling Technical parameter Model ...
  • China Wholesale Induction Surface Hardening Factories - Ultrasonic frequency induction heating machine – Duolin

    China Wholesale Induction Surface Hardening Factories - Ultrasonic frequency induction heating machine – Duolin

    Ultrasonic induction heating equipment IGBT inverter used,high efficiency and low energy consumption Can work continuously with 100% duty cycle and set up 100% at any load Can replace convention heating method such as heating by flame coal salt bath gas and oil Work frequency 10-30Khz,power 30-250KW Digital display and compact design,light weight,easy for installation and operation Soft switch technology and prefect protection system enhance good reliability. Can equipped with infrared t...
  • China Wholesale Induction Heating Aluminium Pricelist - low frequency induction heating equipment – Duolin

    China Wholesale Induction Heating Aluminium Pricelist - low frequency induction heating equipment – Duolin

    Products Description 1: Work Principle: electromagnetic induction heating. 2. IGBT module and Inverting technology 3. Stable reliable and low maintenance cost. 4. 100% duty cycle, continuous working when maximum power output. 5. Digital Display of output power and heating current and work frequency. 6. Simple to install.  Offer documents help for installation and operation 7. Application: billet preheating before forging,induction hardening,pipe heating for bending 8: Low frequency high ...
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