ULT uses state-of-the-art and proprietary honing machines, CNC lathes and specialized inspection procedures to produce the finest barrels in the industry. ULT standard barrels conform to API dimensions and exceed API quality standards. They are available in a variety of lengths and diameters ranging from 1 1/16” through 4.25” and a variety of materials for all sucker rod pumping conditions.

Carbonitrided Barrel: Made from low carbon steel that is carbonitrided on the inside surface only to increase the carbon content. It is then induction hardened on the inside surface to achieve a surface hardness of HRC 58 -66 with a carbonizing thickness of 0.75-1.13mm per side. It is also precision honed and threaded. This barrel is recommended for moderate or severe abrasion in mild to moderate corrosive environments. The minimum yield strength is 75,000 psi.

Corrosion Resistant Carbonitrided Steel Barrel: Made from a 5% chrome steel that has proven its resistance to corrosion in oilfield. It is processed in the same manner as the standard Carbonitrided barrel and has the same properties with an inside surface hardness of HRC 58 -66 and a carbonizing thickness of 0.75-1.13mm per side. It is also precision honed and threaded. It is recommended for abrasion in mild to moderate corrosive application. The minimum yield strength is also 75,000 psi.

Brass Barrel: Manufactured from arsenical admiralty brass with a relatively high yield strength of 50,000 psi. It is recommended for corrosive conditions in the absence of abrasion.

There are two common surface coatings available. One is Chrome Plating which is usually applied to the barrel ID only with a chrome thickness of 0.076mm and a minimal hardness of HRC66 -71; The other is Nickel Carbide Plating which is applied to all surfaces including ID, OD, and threads with a thickness of 0.038mm per side. Our Brass Nickel Carbide barrels are plated at 0.038 mm thickness per side for an extremely corrosion resistant application.

If you need materials and/or coatings other than the above, please Contact Us.

API Plungers are available in several lengths, diameters and configurations. The diameters range from 1 1/16” through 4.25”.

Plain & Grooved Plungers: All plungers can be come as plain or grooved. The grooves are cut into the plunger before coating so that corrosion resistance is maintained in the grooves.

Pin-end & Box-end Plungers: All plungers can be supplied as pin or box-end. This box-end plunger is recommended for use when an end user wishes to reduce friction through the plunger where the inside diameter of the box-end Plunger is larger than pin-end plungers.

ULT offers Spray Metal Plungers and Chrome Plated Plungers. Spray Metal Plungers have a hardness of HRC48 – 52. It is intended for general production conditions with up to moderate corrosion and moderate abrasion. Chrome Plate Plungers come with a minimal chrome hardness of HRC 65.

ULT also offers Monel Pin Plungers as well. The sprayed metal coating is HRC 58 – 62 and extends to the Monel pin on both ends to completely cover the plunger and protect it from corrosion. It is recommended for severe corrosion and abrasion.

If you need materials and/or coatings other than the above, please Contact Us.

Hold-Down Seal Assemblies are available in different configuration, sizes and materials and are also available for every pump assembly and pumping condition. Different Cups are available in nylon, composition and high temperature versions.

Seating Nipples are made to API and industry inside diameters and thread size combinations. Seating nipple configurations include cup & mechanical types in top and bottom hold-down styles.