KOYO import bearings, KOYO bearing type, KOYO bearing the price
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At present in the process of forming method, collar basically has the following kinds: forging molding, turning molding, cold of mid-plane molding and cold extrusion temperature). In the above processing methods, forging forming most widely used, about 80% of the total production, for some small gm products can use stick (tube) material directly shape. Turning Since the 1980 s, our country some small and medium enterprise in the small contractor is adopted in the production of cold rol
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