Hub Piston (O.D.: 2.00"), forged from 42CrMo alloy steel with ultra-audio frequency quenching and CNC grinding processes. Surface hardness HRC58-62, shear strength ≥1100MPa, compatible with APEX SC-35 mud pump power end. Complies with API 7K standards, axial runout tolerance ≤0.02mm, ensuring stable power transmission under high-pressure conditions.
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