SEH Engineering GmbH

Future-proof steel technology

Complex bridge construction with Kemppi SuperSnake

By choosing the Kemppi SuperSnake sub-feeder for its challenging bridge construction project, SEH Engineering was able to reduce the physical load on the welders and maximize productivity. 

SEH Engineering GmbH operates in the steel construction industry. The company has been located in Hanover for over 200 years. In recent years it has shifted from a pure steel construction company to an engineering company. In the fields of steel construction, special construction, bridge and other civil engineering, the internationally operating SEH Engineering GmbH earns between annual revenue of EUR 80-100 million. The company belongs to the French EIFFAGE Group.

SEH Engineering employs about 230 people in Germany. Both the headquarters and  the 22,500 m² manufacturing plant are located in Hanover. Each year, building components and modules of up to 100 tons/item are manufactured within approximately 200,000 production hours. The most renowned, globally recognized constructions include the Center Pompidou in Paris, the Olympic Stadium in Munich, the Shanghai Bank, the Conference Center at the Hanover Fair, several power plants, the Automotive Towers of VW’s Autostadt in Wolfsburg, the Svinesund Bridge between Sweden and Norway, the Swing Bridge El-Ferdan and some bridges over the Rhine River.

SEH Engineering
Steel construction and structures
Hannover, Germany
Kemppi's solution
Base material
The world of welding equipment is getting significantly more competitive. It is difficult to find a manufacturer who is willing to assert itself consistently in this domain. With its service, commitment and cooperation, Kemppi meets this challenge. The innovation power and the support of the service and development departments are above average.

Stephan Fabrig, Head of Manufacturing, SEH Engineering GmbH

Main challenge

At the end of 2018, another imposing construct will be added into the list after a production time of about seven years – the Hochmoselbrücke Bridge. After completion, this bridge will be one of Germany’s largest bridges with a height of 160 meters and a length of 1.7 kilometers. It will connect both the Belgian/Dutch North Sea ports and Belgian metropolitan areas with the Rhine-Main-area. The bridge leads directly across the Mosel valley from Ürzig to Zeltlingen-Rachtig.

At the production plants in Hanover and Lauterbourg (France), the rolled steel sheets are machined for the superstructure, prefabricated and then transported to the construction site with heavy load carriers. The final assembly is performed with the help of on site SEH-developed displacement technology. The bridge superstructure consists of approx. 900 prefabricated components. With a length of 15-25 meters and a weight of 20-100 tons almost every single component is unique. During execution, production and assembly, current regulations as well as customer requirements had to be taken into consideration.

Kemppi's solution

Kemppi's welding equipment and torches have been successfully used in this project to satisfy the specific quality requirements. The SuperSnake sub-feeder especially facilitated operations. With this special equipment, distances of up to 25 meters could be reached with different filler wires between the MIG power sources and wire feeders. So, difficult accessibilities no longer caused problems for the expert staff. Thanks to the SuperSnake, heavy wire feeders did not have to be moved over long distances, which greatly reduced the physical load on the welders and maximized productivity.


Featured solutions


An innovative and award-winning subfeeder that offers wire feed assist you can count ...

An innovative and award-winning subfeeder that offers wire feed assist you can count on. Extends regular reach with up to 25 meters. Compatible with Kemppi FastMig and Pro welding equipment and standard Euro MIG welding guns.

The forerunner of arc welding

Kemppi is the design leader of the arc welding industry. We are committed to boosting the quality and productivity of welding by continuous development of the welding arc and by working for greener and more equal world. Kemppi supplies sustainable products, digital solutions, and services for professionals from industrial welding companies to single contractors. The usability and reliability of our products is our guiding principle. We operate with a highly skilled partner network covering over 70 countries to make its expertise locally available. Headquartered in Lahti, Finland, Kemppi employs close to 800 professionals in 16 countries and has a revenue of 195 MEUR in 2022.

Kemppi – Designed for welders


Technical specifications