Houston-based Vulcan Industrial engineers and manufactures mission-critical components for hydraulic fracturing, energy, aerospace, and defense applications. Its work centers on vertically integrated, USA-built fluid ends and related parts, with in-house research and advanced metallurgy shaping designs such as the patented V-Series line. Vulcan also supports equipment in the field through North American service centers, repair, and its Bore Restore program for extending fluid-end life.
Twin Pines Manufacturing CorpFounded in 1987 by machinist Robert Kovalcik, Twin Pines Manufacturing makes parts for hydraulic fracturing and provides fluid-end and power-end repair from its Clarksburg, Pennsylvania facility. The company began rebuilding plastic and rubber molding machines before shifting into the oil and gas industry in 2010, and now combines custom machining with self-developed fluid-end reconditioning processes. Its FlowMaster fluid ends are a signature product, while repaired fluid ends are reported to average more than 1,000 hours after service.332710CLARKSBURG, PA
National Hose & AccessoryFounded in 1985, National Hose & Accessory supplies and fabricates industrial and hydraulic hose assemblies, gaskets, fittings, and related fluid-handling components from its Houston-area operations. Its trained technicians build assemblies to manufacturer specifications and NAHAD guidelines, while ASME Section 9 certified welders handle custom metal hose fabrication. The company also supports customers with on-site testing up to 5,000 PSI and OnGuard™ asset management, helping industrial operations replace reactive hose failures with planned maintenance.TONAWANDA, NY
Applied Fluid PowerApplied Fluid Power designs, fabricates, distributes, and services custom fluid power systems for mobile and stationary machinery. With more than 80 locations and 1,000 associates across the U.S., the company combines locally invested support with the reach of Applied Industrial Technologies. Its engineering work extends from conventional hydraulic and pneumatic systems to connected, hybrid, and fully electrified machines, while its repair centers use certified mechanics and a 100-horsepower test stand for component refurbishment and testing.TOLEDO, OH
Echelon Supply and ServiceSince 1977, Echelon Supply and Service has manufactured and distributed hydraulic and industrial fluid-handling systems, including custom hose assemblies, for industry and the warfighter. The company has grown from two employees and less than 1,000 square feet to more than 300 employees and 300,000 square feet of manufacturing space across 13 U.S. and Canadian locations. Its Houston operation includes a full weld shop with two ASME-certified welders, while its defense work includes ISO 9001:2015-aligned inspection, testing, and military packaging.LIVERPOOL, NY