Users of gas-fired steam boilers generally choose to use natural gas as fuel, because my country's current natural gas transfer projects have become more popular, and natural gas can be easily used in most areas. For users, it is very important to use gas-fired steam boilers correctly to prevent natural gas leakage.
The main components of natural gas used in gas steam boiler rooms are: methane content of 98%, propane content of 0.3%, butane content of 0.3%, nitrogen content of 1% and other substances; explosion limit: 5% to 15%.
When the concentration of natural gas in the air exceeds 15%, it will cause hypoxia and neurological damage, resulting in respiratory paralysis, coma and even death. A gas explosion is an instantaneous combustion of high-temperature and high-pressure gas up to 3000℃, and the explosion shock wave speed can reach 300 m/s, causing great damage.
Regarding the prevention of the leakage of the membrane water wall pipe of the gas steam boiler, the cause of the leakage should be investigated, and the following preventive measures should be proposed based on the inspection results:
(1) Clean up the scale and slag accumulated inside the boiler to avoid the formation of a strong alkaline environment in the local position of the boiler;
(2) It is recommended that the boiler should avoid long-term low-load operation to improve the water circulation state. The load should be kept at about 80% as the best, so as to prevent part of the water wall tube bundle from stagnating in soda;
(3) The water level meter and the secondary meter display are inconsistent, so adjustments should be made to prevent the boiler from running at a high water level.
(4) According to the requirements of the specification, for steam boilers with a rated evaporation capacity ≥4 t/h, the boiler water quality analysis shall be conducted at least once every 4 hours. When the boiler water quality is abnormal, the frequency of laboratory tests should be increased to keep the boiler water quality indicators in a qualified state for a long time.
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