Pony Rod Piston Pump Type Tapered (SKU: KT275T) API 11B-certified carbon steel (tensile strength ≥800MPa) with quenching+low-temperature tempering (HRC45-50), tapered design for stress optimization, compatible with API 7K mud pumps (e.g., Kerr KA-3500PT), salt spray test 500h corrosion-free, dynamic load longevity 5×10⁶ cycles.
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