Work commenced in spring 2011 on the Stockvik-Skönsberg stretch of the E4 European Route project in Sweden that includes the construction of 33 different bridges. A specific Hempel sales and R+D team in Germany and Sweden came together under German leadership to design and implement the supply of 170 000 litres of coating materials for the new Sundsvall Bridge, the 2 109 metre flyover spanning the Sundsvall Fjörd at a height of 33 metres due to open to traffic in autumn 2015.
Finally a high-solid PUR-Topcoat of HEMPATHANE 55610 tinted to RAL 7037 dust grey. This system is NORSOK M-501 certified and provides fast-curing, high performance, permanent protection for harsh weather-exposed steel. In accordance with Norsok standards Hempel has a proven track record for protecting offshore wind turbines and oil and gas platforms erected in similarly aggressive environments all over the world, as well as an important differentiating factor, in that The prevailing environment in Sundsvall is DIN EN ISO 12944 classed as C5M-high marine atmosphere with wet, saline sea air, severe weather variability and sub-zero temperatures in winter. The Swedish authorities awarded the order to the joint venture “Sundsvallbroen PBM” (PBM = Arge partner: E. Pihl & Son, Max Bögl, Josef Möbius AG). For Max Bögl GmbH & Co. KG, Germany’s largest private steel construction firm, this represents the company’s biggest bridge construction project to date. Amongst other references for the project is Strelasund Bridge, Stralsund, which is also in the Baltic Sea and painted with Hempel.
For exposed bridge structures, the system being used is a shop-applied 3-coat system based on a zinc-rich primer of HEMPADUR PRO ZINC 1738G, followed by a two-component mineral iron oxide coat of HEMPADUR MASTIC 4588F, and the Hempel system calls for just one intermediate coat and therefore represents faster turnover in the production shop.
For inside, unexposed bridge parts, a single layer of HEMPEL’S 457DE two-component, polyurethane coating with zinc phosphate is used. A second NORSOK certified system, comprising an aluminium pigmented primer and intermediate coat of
HEMPADUR MASTIC 4588W, covered by a topcoat of RAL 7037 tinted HEMPATHANE 55610, is being supplied on site in Poland and Sweden for pre-assembly and assembly parts and repairs. This two-component, polyurethane topcoat provides good gloss and colour retention to ensure that the bridge continues to display the full merits of this feat of international engineering for many years to come.