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nVent ERICO Cadweld

The original nVent ERICO Cadweld exothermic welding system.

Invented in 1938. Patented in 1939. nVent ERICO Cadweld has been making connections easier for installers from the beginning and leading the industry in quality, performance and innovation ever since.

For contractors and engineers, we put everything you need to know about Cadweld in one place. How to specify, how to install, how to select a mold and stay up-to-date on all things Cadweld.

  • Product innovations
  • Tips and tricks 
  • Specifications
  • Featured products
  • And more!

In 2020, nVent ERICO continues to innovate with an unwavering commitment to safe, adaptable, easy-to-use products. The nVent ERICO Cadweld Plus Impulse Exothermic Welding Control Unit incorporates new features designed to accommodate multiple power sources and improve safety.

Your nVent ERICO Cadweld Toolkit:


Download sample specifications. 



Choose the right mold. 



Watch videos and request training. 


From basic installation to certifications, we've got you covered from the ground up.

nVent ERICO Cadweld For Engineers

Learn why exothermic connections are the right choice for grounding connections, see the robust list of nVent ERICO Cadweld certifications and download specifications for your next project here.

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nVent ERICO Cadweld for Contractors

Learn the basics of safety and how to install with nVent ERICO Cadweld 101, use the selection tool to choose the right mold for your needs and watch our library of videos here.

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Featured Products

Stay up to date with the latest innovations in nVent ERICO Cadweld. Learn more about our featured products here. 


Our History

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From invention to innovation: learn about the legacy of nVent ERICO Cadweld.

Inventing Cadweld was just the beginning. See historical documents, photos, and learn about our innovations, many applications and the continuous improvement of the industry standard for exothermic welding systems. 

See Cadweld History

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Find everything you need from specifications to installation guides here. Download the latest catalogs, certifications or watch one of the installation videos from our library.


Stay up to date with the latest news and best practices in facility electrical protection with the nVent ERICO Blog. Learn more from the experts with frequent posts written by our team of engineers and thought leaders.
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Grounding and Bonding

Discover everything you need to know about Grounding and Bonding. Learn about nVent ERICO's expertise, engineering solutions, innovative new products and grounding and bonding resources, all in one place.

Contact Us

Got questions? Need help choosing a mold? Can't find what you need? Our customer care and technical support teams are here to help.