heiserTEC: a Joint Venture with Worthington Enterprises

heiserTEC, formerly Sustainable Energy Solutions (SES), is a leading European provider of high-pressure cylinders and systems made of steel.

Hexagon Group acquired a non-controlling stake of 49% in Sustainable Energy Solutions (SES) in 2024, forming a Joint Venture (JV) between two world-class parent companies, Worthington Enterprises and Hexagon Composites.

In October 2025, the SES business was restructured, forming heiserTEC and SES Composites. Hexagon Group completed the full acquisition of the alternative fuels business, SES Composites, from the JV. The carve-out of SES Composites creates a more focused industrial gas business in heiserTEC and enables increased strategic focus on value creation in existing and emerging segments.

49%

owned by Hexagon Composites

350+

employees

European

headquartered, with a facility in Kienberg, Austria

Company

For over 200 years in Kienberg, Austria, heiserTEC has been a symbol of forging excellence and high-pressure expertise. What began in 1817 with a blacksmith’s forge is now continued with state-of-the-art manufacturing technology.

heiserTEC's products store, secure, and transport gases – in industry, medicine, mobility, and safety.

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Joint Venture

Worthington Enterprises (NYSE: WOR) is headquartered in Columbus, Ohio, USA, and is a reputable player in the sustainable energy and pressure vessel space.

This JV expands Hexagon's European footprint and continues developing our Group's strategic position as the global leader of the high-pressure gas industry.

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