ST could supply all kinds of the pony rod. The pony rod is made by high-quality structural alloy steel with specified technology, after heat treatment, the extension rod appear with high mechanical performance ,very smooth surface ,wear resistant and corrosion resistant after heat treatment and chrome plating
Piston Rods for Triplex Mud Pump
ST piston rods are manufactured to exacting standards to meet today‘s tough oilfield requirements, available for a wide range of triplex mud pumps. Manufactured from high quality alloy steel surface is induction hardened for maximum case hardness and core strength-hard on the outside, tough on the inside precision ground mirror surfaces meet rigid quality control standards and minimize wear.
Piston Rods for Duplex Mud Pumps
High quality grayloy material is used on all ST duplex piston rods. Th is corrosion-resistant, high-density, long-wearing surface results in fewer packing changes and longer life for gland bushings and junk rings. Southwest rods are furnished with a heavy duty.