Poppe + Potthoff GmbH

Poppe + Potthoff GmbH is a German Tier 1 manufacturer and developer specializing in precision steel tubes, common rail subsystems, and modular hydrogen supply systems for automotive, commercial vehicle, marine, and industrial applications. Founded in 1928 and headquartered in Werther, Germany, the company produces high-pressure injection lines, precision turned components, heavy-duty couplings, and specialized testing equipment for international OEMs and system integrators. Its product portfolio includes the TOPAQ hydrogen supply system featuring on-tank valves, pressure control units, high-pressure regulation units, and thermal pressure relief devices. In addition to automotive injection systems for diesel, gas, and alternative fuels, Poppe + Potthoff manufactures custom profile tubes, chain tubes, and precision couplings for machine tool building and mechanical engineering. The enterprise also designs and manufactures custom test stands, including burst pressure test stands, leak test systems, impulse test stands, and autofrettage machines for high-pressure component validation. Engineering services provided by the group include custom prototyping, system integration, high-pressure testing, and collaborative OEM application development. Operating manufacturing locations and engineering hubs across Germany, Hungary, the Czech Republic, Slovakia, China, India, and the United States, the group serves global industrial and automotive markets. Through rigorous data-driven quality management and IATF 16949 certification, Poppe + Potthoff delivers precise fluid handling and structural component solutions to global technology leaders.