Capable of producing 72" balls! Zhejiang Haoqiu breaks the previous world record of a maximum diameter of 64".

Zhejiang Haoqiu Flow Control Technology Co., Ltd., Ltd. has been dedicated to the research, development, and manufacturing of valve balls for over 40 years. The company’s production capacity fully covers all sizes of ball projects, with the largest being able to produce balls with a diameter of up to 72 inches. In 2025, with the successful launch of the ultra-large spherical grinding machine developed by the company, the previous world record of a maximum diameter of 64 inches was broken. This breakthrough marks a new milestone in China’s ability to independently manufacture ultra-large diameter ball valves, providing reliable domestic solutions for major projects in related fields.