GMA is a family owned private company that has successfully developed and produced packers and injection equipment over the past 25 years.
GMA has developed and increased the product range throughout the world in order to cover all tasks within tunneling with emphasis on flexibility and security. By using our own patented and designed products with personal security as a major guideline we can inject safely at ”high” pressure.
We work in both steel and rubber in our factory in Sunne and have no problem adjusting our products to suit the customers own specifications.
Together with other partners in this sector, we have been able to develop and enhance our products in the tunneling process according to the demands and specifications laid down on each project.