Both water-tube boilers and fire-tube boilers are relatively common boiler models. The difference between the two makes their target user groups different. So how do you choose to use water-tube boilers or fire-tube boilers? What is the difference between these two types of boilers? Let Zhengzhou Fangkuai Boiler Factory tell you.
The difference between water tube boiler and fire tube boiler lies in the difference of the medium in the tube. The water inside the tube of the water tube boiler heats the water through the external flue gas convection/radiation heat exchange; the inside of the fire tube boiler tube is flue gas, which allows the flue gas to heat the medium outside the tube to achieve heat exchange.
Fire tube boilers have simple structure, large water and steam volumes, good adaptability to load changes, and lower water quality requirements than water tube boilers. They are mostly used in small-scale enterprise production processes and domestic heating. The heating surface of the water tube boiler is convenient to arrange and has good heat transfer performance. It is structurally used for large-capacity and high-parameter working conditions, and has high requirements for water quality and operating level.
The main difference between the two types of boilers is:
(1) Water tube boiler has a wider range of pressure adaptation, breaking through the pressure limit and meeting the 2.5MPa upper steam supply requirements. The fire tube boiler is used under the pressure of 2.5 MPa by the material wall thickness and pressure limitation;
(2) Fire tube boiler shell boilers are too large due to the current equipment and tooling restrictions of various boiler manufacturers. Fire tube boilers are difficult to manufacture, usually 35t/h down-pipe structure boilers to achieve large-scale boilers. 35t/h upper boilers usually adopt water-pipe structure;
(3) Fire tube boilers have the characteristics of compact structure. At the same output, the appearance and equipment weight are lower than fire tube boilers. Water tube boilers have more space for superheaters because of their larger size. Therefore, water tube boilers occupies a relatively large boiler room.
Recently, Zhengzhou Fangkuai Boiler Sales Co., Ltd. traveled to Dhaka, the capital of Bangladesh, to attend the Bangladesh International Textile, Knitwear & Garment Industry Exhibition (BTKG 2026). It showcased industrial thermal equipment and system solutions adapted to the whole process of textile printing and dyeing, actively expanding the South Asian market.
Bangladesh is an important global producer and exporter of textiles and garments. As a pillar local industry, the textile sector has long-term and strong demand for high-efficiency, stable and energy-saving industrial boilers and thermal equipment, with broad market potential. This exhibition participation is an important measure for Zhengzhou Fangkuai Boiler Sales Co., Ltd. to advance its internationalization strategy and further explore overseas markets.
Relying on its technological accumulation and manufacturing advantages in the field of thermal energy equipment, the company provides targeted thermal energy solutions for local textile, printing and dyeing, garment manufacturing and other industries, helping enterprises improve production efficiency and reduce operating costs. In the future, Zhengzhou Fangkuai Boiler Sales Co., Ltd. will continue to focus on overseas market demands, continuously optimize its product and service system, facilitate the high-quality development of the global textile industry with professional and reliable products, and steadily enhance the brand’s competitiveness and influence in overseas markets.
Trust stems from quality
At the beginning of the new year, Fangkuai Boiler and a leading domestic new energy company have reached another important cooperation, successfully signing an order for a total of 500 steam tons.
