Geotechnical Engineering: Welding Equipment that Lasts for Decades

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Product Stories8 May 2025
Whether in tunnel construction, on landfill sites, or when damming retention basins – successful geotechnical engineering needs reliable technology. Leister has been supplying welding solutions that are precise, durable, and economical for over 75 years. Why is this the key to efficiency and economic success? Read our blog post.

Author: Thomas Furrer, Head of Business Line Geo, Leister Technologies AG, Switzerland

Anyone who works in the field of geomembranes knows that welding devices are not a disposable product, but a capital good – and that is exactly how they should be treated. They have to function reliably day in, day out, even under the most demanding of conditions. This raises a crucial question for many companies: Is it worth investing in durable technology – or is cheaper good enough?

Our customers know the answer from over 75 years of experience: with Leister, you can rely on proven quality that delivers what it promises.

Durability That Pays Off

At Leister, we don’t just manufacture devices – we develop durable solutions that are in daily use around the world. Whether on a construction site in the Alps, on a dam project in South America or sealing landfill sites in the Middle East: Our devices such as the TWINNY S, COMET or FUSION 3C are real tried and tested long-distance runners.

At Leister, users benefit from decades of experience, Swiss precision, and a product range that has proven itself in practice:

  • TWINNY S – on the market since 1996
  • COMET – on the market since 1997
  • FUSION 3C – on the market since 2004
  • GEOSTAR – on the market since 2015

Reliable Technology – Day in, Day out

Choosing Leister means choosing:

  • Proven technology instead of untested prototypes
  • Long-term availability of spare parts and comprehensive support
  • A worldwide service network with competent partners
  • Devices that prove their worth on a daily basis – often over decades

And best of all: Our welding machines are not only durable – they consistently deliver the highest quality. This not only saves time and stress, but also increases efficiency on the construction site.

Rely on Experience – and a Strong Partner

Breaking new ground is important – but it pays to have an experienced partner by your side, especially when it comes to capital goods. Leister not only supports you with high-performance products, but also with decades of expertise, training, and personal advice.

Do you have any questions about our devices or would you like to see their durability for yourself? Then talk to us – we are there for you worldwide.