National Oilwell Varco

Keystone Tower Systems, Inc. manufactures and installs wind turbine steel towers using spiral welding. It performs all the rolling and welding operations. The company was founded in 2010 and is based in Westminster, Colorado.

Fjords Processing AS is a global provider of processing technology, systems, and services tailored for the upstream oil and gas industry. Established in 1972 and based in Lysaker, Norway, the company specializes in manufacturing equipment and offering support services for oil, gas, produced water, and seawater clients. Fjords Processing delivers advanced solutions such as separator internals, oil dehydration and desalting systems, and heavy oil treatment products. Additionally, the company provides comprehensive gas processing services, including inhibition, dehydration, and vapor recovery, along with a range of water treatment solutions like gravity separators, flotation technologies, and seawater treatment systems. The firm also offers operational support, commissioning, training, and process optimization services, ensuring clients receive tailored and effective solutions for their processing needs. Fjords Processing operates as a subsidiary and maintains a strong commitment to innovation in separation and water treatment technologies.

Robbins & Myers, Inc. is a leading supplier of engineered, application-critical equipment and systems in global energy, chemical and other industrial markets.

Fiberspar is a leading manufacturer of high-strength, fiber-reinforced tubular products specifically designed for the oil and gas industry. The company specializes in innovative spoolable LinePipe products, which have become a preferred choice among top industry producers due to their significant cost and performance advantages over traditional steel and fiberglass options. In addition to LinePipe, Fiberspar offers SmartPipe, a solution that facilitates the transmission of real-time data during drilling or well intervention operations, as well as permanently installed production tubing. The company also provides connectors to complement its product offerings, reinforcing its commitment to delivering advanced solutions tailored to the needs of the oil and gas sector.

Wilson International is a privately held company that distributes pipes, valve and valve automation, fittings, mill and tool supplies.

Enerflow Industries is a fabricator and manufacturer of pressure pumping, blending, cementing, and other service equipment.

NKT Flexibles I/S designs and manufactures flexible pipe products and systems for the offshore oil and gas industry.

STSA is a company that was acquired by National Oilwell Varco in 2011.

Ameron International is a privately held manufacturer of highly-engineered products and materials for the chemical and industrial markets.

Advanced Production and Loading (APL) is a prominent company specializing in the development and fabrication of advanced systems for offshore oil and gas production. The firm focuses on turret mooring systems designed to facilitate the safe loading and transport of oil and gas by ships. APL's innovative solutions enhance the efficiency of floating production, storage, and offloading vessels, as well as other offshore vessels and terminals. By streamlining offshore loading and transport processes, APL plays a critical role in the energy sector, addressing the complexities associated with the storage and transportation of hydrocarbons.

South Seas Inspection is a privately held company that provides a wide array of oilfield services including rig and derrick construction.

Grant Prideco manufactures and sells a variety of drill stem products used for the drilling of oil and gas wells.

Welch Sales and Service is a privately held company that is into renting and leasing heavy construction equipment.

NQL Energy Services is a provider of downhole tools, technology and services used primarily in drilling applications in the oil and gas.

Iri nternational manufacturers of land-based drilling and well-servicing rigs and rig component parts for use in the global oil and gas industry and is principally engaged in the design, manufacture, service, sale and rental of onshore and offshore oilfield equipment for the domestic and international markets. Through its IRI and Cardwell operations, the Company designs and produces rigs to meet the special requirements of its global clientele for service in remote areas and harsh climatic conditions. Through its Bowen Tools Division, the Company is a leading manufacturer of downhole fishing and drilling tools and offers a complete line of oilfield power equipment, including top drives, power swivels, wireline pressure control equipment and coiled tubing systems, which complement the Company's drilling and well- servicing rigs. The Company also manufactures and maintains a significant inventory of replacement parts for rigs produced by the Company and by others, enabling it to meet the needs of its customers on a timely basis. As a result of its diverse product lines and the availability, on a sale or rental basis, of the products of the Bowen Tools Division, the Company is able to satisfy a wide range of its customers' special requirements. Through its Specialty Steel Division, the Company produces premium alloy steel for commercial and military use and for use in manufacturing oilfield equipment products.