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Machinery, Machine Parts, 1. Hot forged ring, 2. Heat treatment, 3. Machining: Rough machining or finish machining, CNC machining. 4. Material: Carbon steel, alloy steel. 5. material standard: GB, ASTM, AISI, 6. Dimension: ID10mm to OD3500mm, 7. Customized as customers's request, 8. 100% UT inspection, 9. Third party inspection accepted, Machine Parts ...