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Manufacture process for steel balls

1.Raw material

Carbon steel Q235/195、1010、bearing steelGCR15，stainless steel 201/420/316/304/202, and copper wire H59/H62/H68/H70/H80/H90

2.Tensile

3.pressing

4. first grinding

5.heat treatment

6.polishing

7.precision grinding

8.Precision polishing

9.Selecting

10.Package

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