The 4-ton oil-gas dual-purpose boiler can use either oil fuel or gas fuel. The requirements for fuel adaptability are very low, and it can be used normally in any region of our country. Many users are very interested in the hourly operating cost of the boiler, which is related to the investment cost of the boiler. Zhengzhou Fangkuai Boiler Factory is here to answer everyone.
At present, the thermal efficiency of the 4-ton oil-gas dual-purpose boiler launched by Zhengzhou Fangkuai Boiler Factory can reach more than 98%, which is at least 10% higher than ordinary boilers on the market. It can be said to be very energy-saving, so it runs every hour. The cost is also very low and can be controlled at around 45meijin. Of course, the specific cost depends on the actual usage of the user.
Everyone knows the importance of thermal efficiency to boiler energy consumption. What are the reasons for the low efficiency of boiler operation? Zhengzhou Fangkuai Boiler Factory gave the answer.
The main causes of boiler thermal efficiency problems are: high exhaust gas temperature; low soot blower input rate; large ash and slag combustible materials; excessive or small boiler oxygen; large heat loss; large air preheater leakage rate; high quality of steam and water Poor; The equipment has defects and is forced to run with reduced parameters.
The main measures to solve the above problems are: reduce the exhaust gas temperature; eliminate soot blower defects in time and increase the soot blower input rate; reduce fly ash combustibles and slag combustibles; control boiler oxygen content; reduce heat loss; reduce air preheating Heater air leakage rate; control the fineness of coal to be qualified; improve the quality of steam and water; adjust the layout of the heating surface of the boiler according to the situation; modify the burner if necessary to make it suitable for gas fuel.
We, Zhengzhou Fangkuai Boiler Co., Ltd. (Fangkuai), are excited to announce our participation in the Indonesia International Heating Technology Exhibition 2025. We will be showcasing our advanced boiler systems engineered for higher efficiency, lower emissions, and sustainable energy performance. Join us at Booth No. B1-08 from November 5–7, 2025 at the Jakarta Convention Center.
The event brings together EXPO BOILER, EXPO BIOMASS, EXPO PUMPS & VALVES, and EXPO CRANE — creating a comprehensive platform for technology exchange and business collaboration across the industrial heating and energy sectors in Southeast Asia.
At the exhibition, we will present our integrated solutions including biomass boilers, industrial steam systems, and full power plant EPC services. Our products emphasize:
Event Details
Date: November 5–7, 2025
Venue: Jakarta Convention Center, Indonesia
Booth: B1-08
We welcome industry partners, plant owners, EPC clients, and technology scouts to visit our booth and explore collaboration opportunities. Whether you are planning a biomass retrofit, a new power plant EPC project, or seeking high-efficiency boiler equipment, our engineers will be available for technical discussions and project consultations.
Visit our booth / Contact us












Wins Another Invention Patent
Brilliant Glory, Continuing to Write a Brilliant Chapter
Striving for "Innovation" and "Quality"
Focusing on Cutting-Edge Technologies
Creating New Momentum and New Advantages
Promoting the Continuous "Innovation" of New-Quality Productivity
On June 17th, our company was awarded another national invention patent. To date, the company has secured 162 national patents and 13 invention patents, and has been deeply involved in the formulation of eight national and industry standards. We continue to lead industry development with technological breakthroughs.

Overcoming challenges and achieving remarkable results
Attaching great importance to technological innovation
While pursuing superior quality, Fangkuai also attaches great importance to technological innovation.
Developing product diversity
To better meet the diverse needs of consumers, Fangkuai develops diverse product images during R&D and production.
Fangkuai family portrait

Gloriously writing a new journey
The company has always adhered to the philosophy of
"Building Character, Creating Quality Products"
Using technological R&D as the core driving force
Also promoting application
Effectively promoting technological advancement in the industry and engineering products
Future

Continued
Scientific and technological R&D and technological achievement transformation
Generate more core independent intellectual property rights
Solidly promote the company's high-quality development