Hard water is a common name in our lives, refers to water containing calcium and magnesium ions and other impurities. In life, the use of this kind of water is more, it is easy to accumulate scale; and the same is true in boiler equipment.
Boiler water generally contains impurities, mainly calcium and magnesium salts. If the hardness is above 8 degrees, then it is called hard water, and when it is used, it is easy to form hard scale in the boiler, which will increase the energy consumption of the boiler. To solve and avoid scale problems in boilers, it is necessary to start from the source and soften the hard water.
A boiler of 1 million kcal is equivalent to a boiler of 1.7 tons. Because 600,000 kcal is equal to 1 ton, it is only possible to draw a conclusion.
When it is found that the boiler's hot water supply pipe is frozen, the solution measures are mainly the following aspects.
Measure one: The boiler operates at a low temperature, and its temperature is gradually increased to defrost naturally.
Measure 2: Use fire welding, or use liquefied gas for fire roasting.
Measure 3: Use electric heating or hot water pouring to defrost.
The energy used by the gas-fired boiler is gas fuel, which is a kind of clean energy. Therefore, the flue gas generated by the boiler does not require special treatment. The feed water is also softened water, and it only needs to cool down and settle during the sewage discharge, and the operation is very simple.
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