Atmospheric hot water boiler is a type of hot water boiler, mainly used in winter heating, hot water supply and other fields. Due to the high safety performance of the boiler, it is trusted and used by the majority of users. Although the safety performance of atmospheric hot water boilers is very high, there are strict standard requirements in terms of design, manufacturing, inspection, acceptance and delivery technical documents, which should meet JB/T7985-2002 "Small Boilers and Atmospheric Heating Technical Conditions for Water Boilers", according to the requirements of JB/T7985-2002 "Technical Conditions for Small Boilers and Atmospheric Hot Water Boilers" [New Standard].
Recently, Zhengzhou Fangkuai Boiler Factory found that many users who use atmospheric hot water boilers do not care much about the installation and use of boiler air pipes. In fact, this is a very dangerous behavior, and improper operation can easily cause boiler damage.
According to the provisions of Article 6.2.9 in the “Conditions” mentioned above, the equivalent diameter Dd of the atmospheric pipe connecting pipe of the atmospheric hot water boiler should be calculated as follows: Dd=88×√(Q), where Dd——atmosphere The equivalent diameter of the connecting pipe, in millimeters (mm); Q——The rated thermal power of the atmospheric hot water boiler, in megawatts (MW). The calculated Dd value is rounded according to the diameter of the pipe specification and can only be increased, not reduced.
According to the provisions of Article 6.3.5 of JB/7985-95 [Old Standard], the pipe diameter should be calculated according to the following formula: Dd=20+88×√(Q), where Dd——the equivalent diameter of the atmospheric connecting pipe, unit It is millimeter (mm); Q——The rated thermal power of atmospheric hot water boiler, the unit is megawatt (MW). The calculated Dd value is rounded according to the diameter of the pipe specification and can only be increased, not reduced.
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.
