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Polished Rod with an optimal surface finishing to ensure an appropriate sealing in the stuffing box.One end diameter enlarged polished rod and high-strength, long stroke, corrosion resistant polished rod are available. All the polished rods are made of quality alloy steel and machined by using the advanced machining technology with high strength, smooth surface and long service life. All types of the polished rods are API and ISO9002 certified. The tensile strength exceeds 1, 000 MPa (145, 000psi).
