Gräbener Maschinentechnik GmbH & Co. KG

Gräbener Maschinentechnik GmbH & Co. KG is a fourth-generation, family-owned German machine builder founded in 1921 and headquartered in Netphen, Germany, with a U.S. office in Houston, Texas. The company specializes in custom heavy industrial machinery for metal processing, serving pipe manufacturing, wind tower fabrication, shipbuilding, vessel construction, automotive hydroforming, and hydrogen fuel cell component production. Core product lines include hydraulic forming presses (up to 13,000-ton capacity), pipe bending presses handling 16-inch to 64-inch diameter pipe, plate edge and seam milling machines for weld preparation, calibration and straightening presses, and complete production lines for metallic bipolar plates used in electrolyzers and fuel cells. Gräbener operates two business units: Maschinentechnik (special machines) and Bipolar Plate Technologies (hydrogen components). The company maintains a global sales network with representatives in 14 countries and holds ISO 9001 and ISO 14001 certifications. Over its 100-year history, Gräbener has established a position as a world market leader in pipe forming presses and narrow-gap weld seam milling equipment.