Two photographs. The same mill. Fourteen years apart. The first photograph was taken on July 25, 2012. The second was taken on September 5, 2026. Both are real site photographs from the same milling operation, recording Shandong Gangyan’s involvement with the customer across a fourteen-year period. What changed was time. The workwear and image quality […]
Hardness is one of the first values buyers compare when evaluating forged grinding balls. It is important—but a single surface HRC reading cannot tell you whether a grinding ball will wear evenly, resist breakage or remain stable after its diameter decreases in service. Reliable grinding media performance depends on a combination of surface hardness, core […]
