zozen boiler
Home Service FAQs Boiler basics What is grade-A boiler?

What is grade-A boiler?

23 Jul 2021

In the industrial boiler industry, it is generally divided into four grades: A, B, C and D according to the production qualification license grade, among which, when purchasing boilers, users often consider Grade A boiler manufacturers. What is a grade A boiler?

 

The production license scope of Grade A qualification is not limited.

Grade B steam boiler with rated steam pressure less than or equal to 2.5 MPa.

Grade C steam boiler with rated steam pressure less than or equal to 0.8 MPa and rated evaporation less than or equal to 1 ton/hour; Hot water boiler with rated outlet water temperature less than 120 degree Celsius.

Grade D steam boiler with rated steam pressure less than or equal to 0.1 MPa; The rated outlet temperature is less than 120 MW and rated thermal power is less than or equal to 2.8 MW.

Related news View More
  • Steam Runs Through the Brewing Process: ZOZEN Boiler Supports the Baijiu Industry
    Baijiu production is a continuous process. From grain steaming and fermentation to distillation, sterilization, and fermented-grain residue handling, many stages require a stable steam supply. As baijiu producers expand their operations, boiler systems need to provide sufficient steam while also adapting to different fuel conditions, changing loads, and environmental management requirements. In recent years, ZOZEN Boiler has developed steam boiler and auxiliary system solutions for baijiu produ...
    11 Aug 2026
  • A 10 TPH Boiler Delivered in 40 Days: The “ZOZEN Speed” Behind Yanjing Beer’s Letter of Appreciation
    Recently, Wuxi Zozen Boilers Co., Ltd. received a letter of appreciation from Yanjing Beer (Guilin Lijiang) Co., Ltd. In the letter, the customer expressed appreciation for ZOZEN Boiler’s responsiveness, coordination, and delivery support throughout the project. The customer also noted that ZOZEN helped resolve issues related to scheme adjustments, equipment access, and the delivery schedule. Letter of appreciation from Yanjing Beer (Guilin Lijiang) Co., Ltd. The letter was related to ...
    04 Aug 2026
  • ZOZEN Boiler Continues to Deepen 6S Management: From Workplace Standards to Manufacturing Coordination
    In industrial boiler manufacturing, the condition of materials, the organization of work areas, coordination between production processes, and safety requirements all affect the stability of manufacturing operations. As a boiler manufacturer, ZOZEN Boiler continues to promote 6S management by integrating Seiri, Seiton, Seiso, Seiketsu, Shitsuke, and Safety into daily workshop operations. The company is extending 6S management from workplace improvement to material control, process coordination, ...
    28 Jul 2026

Find the Right Boiler For You

Name *

Email *

WhatsApp/WeChat

Products

Power/Capacity