CNNC Technology Delivers Nearly 1,000 Ultra-Low-Temperature Ball Valves, Achieving Breakthrough in New Processes

Recently, the Ball and Butterfly Valve Factory under CNNC Sufa Technology Industry Co., Ltd. successfully completed the delivery of an order for nearly 1,000 cast steel ultra-low-temperature metal-seated ball valves. The products for this project are required to meet the stringent ultra-low-temperature operating conditions of -196°C and are characterized by a large batch size, a tight schedule, and the adoption of entirely new processes.

It is understood that this project involved 33 sets of entirely new designs. The technical team completed the pre-investment of blanks and product design in advance, and through tiered special technical briefings, clarified the quality standards for casting, machining, assembly, and inspection positions, ensuring that the products succeeded in pump installation testing on the first attempt and laying a solid foundation for subsequent mass production.

Facing extremely high requirements for assembly and pressure testing precision, the factory established a special task force and coordinated continuous efforts across multiple departments including testing, production, procurement, and sales. The team closely monitored key processes throughout the entire process, including blank microstructure, non-destructive testing, and pump installation pressure testing, cleared production bottlenecks, and strictly controlled quality. Ultimately, the products successfully passed acceptance under both ambient and ultra-low-temperature operating conditions.

The successful delivery of this order fully verified CNNC Technology's independent technical capabilities and mass manufacturing strength in the field of cast steel ultra-low-temperature metal-seated ball valves, further broadened the company's project management experience in large-diameter cryogenic valves, and laid a solid foundation for the company to undertake major projects and expand into similar high-end valve markets in the future.