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High Speed Steel Ball

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High Speed Steel Ball

High quality Forged Steel Grinding BallGrinding Media for Mine DESCRIPTION 1. Grade 4550Mn60Mn65MnB2B3BLBG 2. Diameter 15mm-150mm 3. Hardness HRC 55-65 4. Breakage Rate1 5. Impact Value 12jCm2 6. Falling ball times 20000s. ForgedRolling Steel Ball Classification and Chemical Composition

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