Condition assessment of steel pipelines

Together with network operators, we work out strategies for assessing the condition of steel pipelines after decades of service and implement them in technical rules and regulations.
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HFI-welded steel pipe for oil gathering systems in water-flooded oilfields

HFI-welded steel pipes with slip-welding joints and a modified cement mortar lining are our response to increasing demand for pipelines used in the transportation of oil-water mixes from water-flooded oilfields. » read more

HFI-welded steel pipe for low-temperature pipelines

A highly sophisticated bainitic steel adapted to pipe production by Salzgitter Mannesmann Line Pipe ensures safe transportation of gaseous and liquefied media at ultra-low temperatures.
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HFI-welded steel pipe for the transportation and storage of hydrogen

Previously, only line pipe made from steels up to and including grade X52 (L360) to API 5L were approved or considered safe for the transportation of pure hydrogen or its admixture to natural gas. Our investigations revealed that higher-grade steels up to and including X70 (L485) are equally safe and suitable. » read more

Orbital laser welding: automated welding and weld testing in a single step

The combination of laser welding and ultrasonic testing in a single operating step has successfully passed its pilot test. This process can enormously reduce the cost and time involved in pipe-laying projects.  » read more

Combined methods for microstructure characterization

Mannesmann Line Pipe is expanding the spectrum of methods by systematically combining various approaches to microstructure characterization with a view to optimizing the properties of its tube and pipe. » read more

Thermodynamic modelling of microstructural changes during HFI-welding

Mannesmann Line Pipe has recently developed an innovative model that can predict the depletion of alloying elements in HFI-welded joints. » read more