Oil and gas boilers are widely used in food, printing and dyeing, chemical, pharmaceutical and other industries, and are currently heat energy supply equipment that meets national environmental protection requirements. As a mechanical equipment, it needs good maintenance to extend its life. Before maintaining the boiler, it is necessary to know the names of various parts, the names and positions of various professional terms.
The heated surface, as the name suggests, is the place to receive and transfer heat. In the oil and gas boiler equipment, the heating surface refers to the interface that absorbs heat from the exothermic medium and transfers it to the heating medium, including convective heating surface and radiant heating surface.
1. Radiant heating surface
The heating surface that absorbs heat from the heat-releasing medium mainly by means of radiation heat exchange, and the heating surface that absorbs heat from the heat-releasing medium mainly by means of radiation heat exchange. Such as water-cooled wall pipes, furnace bladder, etc.
2. Convection heating surface
The heating surface that absorbs heat from the high-temperature flue gas by means of convective heat exchange usually refers to the heating surface through which the flue gas passes, such as flue, convection tube bundle, etc.


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.




