The front tube plate of the back-combustion chamber is the most severe part of the environment in the operation of the three-return boiler. Due to the long-term interaction between high and low temperature alternating thermal stress, it is easy to cause thermal fatigue crack at the pipe end, which is the most in the three-return structure boiler. A place where problems are easy to occur.
Based on years of research experience on boilers, FANGKUAI has developed a set of specific measures to treat the cracking of the front tube sheet of the back-fired chamber, effectively reducing the risk of cracking.
1. The use of the edge-trimming ceramic tube with good temperature resistance and heat insulation effect to protect the weld seam of the front tube sheet of the back-fired chamber is not only simple in construction but also in quality.
2. Refractory cement is laid in many places at the entrance of the pipe to effectively reduce the radiation and erosion effects of the smoke.
3. The length of the pipe extension pipe is set to 3 mm long to reduce the smoke scouring effect.
4. The manufacturing process is carried out by first expanding and then welding and then re-expanding to effectively eliminate the gap between the pipe and the pipe hole.
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.
