Our company

Mannesmann Line Pipe is a leading specialist for longitudinally HFI-welded steel tube and pipe in a wide range of dimensions and grades. Our production sites in Siegen and in Hamm supply their products to customers around the globe.

Our steel tube and pipe

  • provide access to clean drinking water for countless households in various continents;
  • are the lifelines of modern society as line pipe for energy carriers;
  • serve as sleek and stylish load-bearing elements in bridges, buildings, halls, stadiums and offshore rigs, etc.;
  • are facilitating the energy supply systems of tomorrow as district heat pipes or structural tubes for wind towers.

Other application areas

Maximum quality and safety
Our tubes and pipes are also used in numerous critical infrastructure applications around the globe. Over 100 years of experience in tube and pipe production as well as continuous further development of our production and product technologies give our customers the certainty that our steel tube and pipe meets and will continue to meet the most stringent requirements and specifications regarding quality and safety.

A strong group
As part of the Steel Processing Business Unit in the Salzgitter AG Group family we can ensure that our customers profit from the extensive know-how transfer within a broad-based steel and technology Group.

Flexible, active and on site around the globe
Our optimized production schedules, carefully planned inventories and a worldwide sales network enable us to react flexibly to customers' needs and wishes. Our experienced team of experts is happy to provide comprehensive technical advice from the planning stage to the construction site, where personal contact with our customers is highly appreciated.

On the way to new markets with steel tube and pipe
With its very special mechanical and technological properties, HFI-welded steel tube and pipe has firmly established itself in numerous sectors. As specialists for this product, we are opening up new application possibilities and developing custom-tailored technologies time and time again (see data sheets). Steel tube and pipe will thus remain a driver of technical progress in the future as well.

More than 100 years' competence in pipe

1897 Start of production of longitudinally welded Mannesmann steel pipe

1937 Start of pipe production at the Siegen location

1952 Market launch of welded gas line pipe

1958 Market launch of polyethylene pipe coating

1965 Start of pipe production at the Hamm location

1986 Market launch of fiber cement mortar coating

2007 Start of 24" pipe production

2010 Start of production of pipes with wall thicknesses of 1"

2020 Production of the first hydrogen pipelines Mannesmann H2ready®

More details about our company history

Brand of the century 2022

Mannesmann ranks among the most prominent brands in Germany's industrial history, among the brands of the century presented by Florian Langenscheidt in his book "Marken des Jahrhunderts".