We use the most advanced fully automatic shell-type small ball production line to produce small-sized steel balls, 6 mm, 8 mm, 10 mm, 15 mm, 20 mm, 30 mm, 40 mm, etc. This type of small-sized steel ball has a large output, the hardness of the surface and core is greater than 60HRC, and the performance is excellent.
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Oct 22 2024 
