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Branch Brochure Offshore & Linepipe
Linepipe Plates
We deliver linepipe plates for highest demands, deepest temperatures and extraordinary requirements. Main applications are pipelines onshore with large diameters up to 48 inch (1220 mm) and deepwater pipelines down to 2500 m.
Our plates for linepipes are sour gas resistant ph3 and ph5.
Advantages
The main benefits of our thermomechanically processed (TMCP) plates for linepipe are excellent toughness and best weldability (high toughness in the heat affected zone and high resistance against cold cracks in the welding seam).
Slabs from our TOP-steelplant
The basis for the production of high quality linepipe plates are excellent slabs. We procure continously cast slabs from our TOP steel mill at voestalpine Stahl GmbH in Linz. Steel with a high cleanliness is produced in the LD process, with subsequent metallurgical and vacuum treatment.
Process models guarantee the precise chemical composition. The roller gap in the casting machine is adjusted using SMART Technology for soft reduction to minimise center segregation. High level automation of the casting process, including computer aided quality control, ensures optimum surface quality of the slabs.
Steel grades and dimensions
Steel grades:
| acc. to API 5L: | Grade B, X52, X56, X60, X65, X70, X80, X100 |
| acc. to EN 10208-2: | L360MB, L415MB, L450MB, L485MB, L555MB |
| acc. to DNV OS-F101: | SAWL360, SAWL415, SAWL450, SAWL485, SAWL555 |
Dimensions:
| Plate thickness: | 10 - 50 mm |
| Plate width: | 1800 - 3850 mm (max. 48 inch diameter of pipe); smaller width on request |
| Plate length: | max. 18,700 mm; longer plates up to max. 24,000 on request |
Our plates for linepipe are thermomechanically rolled with accelerated cooling.
All grades are available in sourgas resistant condition pH3 or ph5 acc. to NACE TM 0284 Solution A and B.
All grades can be deliverd with a notch impact test and Battelle drop weight tear test (BDWTT) at temperatures below 0° C. HIC-tests for sour service on request.
