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Thermal Oil Heater
Gas-Fired Thermal Oil Heater
Natural gas · Diesel · Fuel oilPrecisely controlled high-temperature process heating with clean combustion and flexible system integration.
View solutionLeading Manufacturer & System Supplier In China for Thermal Oil Heaters & Steam Boilers
We are a specialist manufacturer and system integrator with professional export capabilities. We supply only reliable, high-quality products.
Safety comes first
Safety guides our design, manufacturing and control decisions.
Complete-system engineering
Boiler, auxiliaries and controls designed to work together.
Matched to your process
Equipment selected for your heat duty, operating temperature or steam pressure.
Built around your fuel
Combustion and fuel handling matched to your fuel, load and site.
Direct manufacturer Factory and workshop.
30 years of focus Professional boiler design & manufacturing
12,000+ customers Industrial users served since establishment
30+ export markets Project experience across global industries
Regulatory licensed Boiler & pressure-vessel manufacturing in China
Higher supply standards Applicable ASME & CE/PED engineering capability
System-matched design Boiler, auxiliaries and controls matched to site conditions
Boiler & system expertise Specialists in boilers. Stronger in complete-system engineering.
Core Boiler Products
Thermal oil heaters and steam boilers for industrial processes.
Gas, oil, biomass and coal-fired equipment is selected around your real heat demand, operating conditions, fuel and plant arrangement. Compare the thermal oil heater manufacturer range or review the steam boiler manufacturer range.
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Thermal Oil Heater
Biomass-fired Thermal Oil Heater
Wood chips · Pellets · Agricultural residuesRobust process-heating systems designed around biomass fuel characteristics and stable thermal-oil circulation.
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Steam Boiler
Gas-Fired Steam Boiler
Natural gas · Diesel · Fuel oilIndustrial steam generation with compact integration, automated control and project-specific auxiliary systems.
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Steam Boiler
Biomass-fired Steam Boiler
Wood chips · Pellets · Agricultural residuesFuel-adapted biomass steam systems for continuous industrial production and complete plant integration.
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Thermal Oil Heater
Coal-fired Thermal Oil Heater
Project-specified coalHeavy-duty thermal-oil heating for sites where solid fuel and long-duration process heat are required.
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Steam Boiler
Coal-fired Steam Boiler
Project-specified coalIndustrial steam boiler packages for solid-fuel applications, engineered with matching auxiliaries and controls.
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More than the boiler body
One system. One engineering responsibility.
Tailored System Solutions
Your heat demand and fuel define the solution.
We configure the boiler, fuel system, circulation or feedwater equipment, heat recovery, emissions equipment and controls as one coordinated package for your production process.
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01
Process definition
Duty, temperature, pressure, fuel and operating pattern.
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02
Boiler & system design
Equipment selection, circulation, piping and auxiliaries.
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03
Control integration
Protection logic and operation built around the full system.
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04
Delivery support
Documentation, installation guidance and commissioning support.
Manufacturing & supply
JIELI THERMAL is a China boiler manufacturer supplying industrial thermal oil heaters—also called thermal fluid heaters, thermic fluid heaters or hot oil boilers—and steam boiler systems with gas, oil and biomass firing options.
Our commitment
We are committed to building the safest, most reliable boiler systems. This is our longstanding commitment, not just a slogan. We aim to be your most cost-effective heating system supplier in China. Choosing JIELI THERMAL means choosing reliability.
Boiler Manufacturing in China
A purpose-built manufacturing base.
These are real photographs from our own workshop. Pressure-part preparation, coil forming, assembly, welding, inspection and control integration are carried out under our manufacturing system.
Our production workshopBoiler manufacturing base in Linyi, Shandong
Products in our workshopThermal-oil coils and boiler bodies under fabrication
Assembly & finishingReal equipment, real people, real manufacturing
Thermal-oil coil formingHeat-transfer geometry produced in-house
CNC plate preparationControlled preparation before forming and welding
About JIELI THERMAL
Experienced enough to see the whole system.
JIELI THERMAL is a professional Chinese designer and manufacturer of thermal oil heaters and steam boilers with 30 years of focused experience. We combine pressure-part production, complete-system engineering and advanced electrical controls within one experienced team.
Project-specific design and manufacturing can follow applicable ASME, CE (PED Directive) and other standards. Our goal is equipment that runs safely, steadily and efficiently for the long term, supported by a system that is practical to operate and maintain.
- Process-led selection. Match heat duty, temperature or steam pressure, fuel and operating conditions.
- Complete-system engineering. Coordinate the boiler, auxiliaries, controls and safety interlocks.
- Manufacturing and delivery. Review real workshop and export projects, with after-sales support for your plant.
China licensed
Boiler & pressure vessel manufacturing
30 years
Professional design & manufacturing
System-first
Boiler and auxiliaries coordinated
Global standards
ASME & CE/PED capability
Industrial Applications
Heat for demanding production lines.
- Chemical processing
- Wood & panel production
- Textile & dyeing
- Food processing
- Paper & packaging
- Rubber & plastics
- Pharmaceutical
- Building materials
Selected Work
Built, installed and prepared for delivery.
Browse boiler systems during manufacture, installation and preparation for overseas delivery.
Biomass steam
Thailand Biomass Boiler Project
Biomass combustion, boiler auxiliaries and site system integration.
View related boiler
Gas-fired steam
Industrial Gas-fired Steam Boiler Project
Packaged steam generation with burner, instruments and process piping.
View related boiler
Biomass steam
Overseas Biomass Steam Boiler Superheated Project
Structural installation for an industrial biomass steam application.
View related boilerNews & Industry Knowledge
Practical boiler knowledge from our engineering team.
Technical guidance, project experience and manufacturing updates written for industrial boiler users.
September 21, 2026 · Original JIELI technical notes
Thermal Oil Startup: Dehydration and Boil-out
Understand cold pressure changes, pump noise and tank level using JIELI’s original field notes, with a 280°C observation example and downloadable log.Read the technical notes
August 13, 2026 · Project Planning
What Industrial Boiler Field Cases Show Buyers
Use real project images to ask better questions about scale, fuel handling, piping, access, logistics and commissioning.Read guide
July 30, 2026 · Steam Boiler Guide
Industrial Steam Boiler Selection Guide
A practical engineering workflow for defining steam demand, pressure, load profile, fuel, feedwater, condensate return, controls and boiler-house auxiliaries. Read guide
July 30, 2026 · Thermal Oil Guide
Thermal Oil Heater Selection Guide
How to define heat duty, operating temperature, thermal-fluid limits, circulation, expansion, fuel equipment and protection logic before selecting a thermal oil heater. Read guide
August 11, 2026 · Buyer Terminology Guide
Thermal Oil Heater vs Thermal Fluid Heater vs Hot Oil Boiler
Understand the terminology, system differences and project data buyers should define before requesting a quotation. Read terminology guideGlobal project support
Find JIELI boiler systems in the language your project team uses.
Compare equipment, review project references and prepare a quotation request in your preferred language.
English project supportPakistan · Australia · Cambodia · Nigeria · South AfricaEspañolChile · Argentina · South AmericaРусскийRussia · Kazakhstan · Uzbekistan · Kyrgyzstan · Tajikistan · TurkmenistanالعربيةEgypt · Saudi Arabia · UAE · Middle EastPortuguêsBrasil · Preparar uma cotaçãoBahasa IndonesiaIndonesiaTiếng ViệtViệt NamไทยประเทศไทยFrançaisAfrique du Nord · Afrique de l’Ouest
Prepare a useful RFQ
Five inputs help us shape the right boiler system.
Send what you already know. Our project team can identify the remaining technical information needed for preliminary selection.
- 01Capacity or heat duty
- 02Temperature or steam pressure
- 03Fuel specification
- 04Industry and load profile
- 05Project country and site conditions
Start a Project
Tell us what your process needs.
Share your fuel, required capacity, operating conditions and project location. Our team will help shape the boiler and the complete system around your actual production requirements.