High-precision stainless steel balls for valves, bearings, precision parts, electronics and industrial machinery. Kangda lists 304, 316 and 440C materials, with sizes from 0.3 mm miniature balls to large balls exceeding 200 mm. Products include food-grade 304, medical-grade 316 and G10 440C balls, plus solid 304 or 316 balls from 1 inch to 2.5 inches. The category states G10-G1000 precision and GB/T308.1-2013 benchmarks, with heat treatment and multi-stage grinding.
