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All the way to scotland via flat-bed lorry

A Scot and an Austrian meet – this is how the story starts, the one where two companies from Lower Saxony take over the main parts: hot dip galvanizing Holdorf and its customer WURST Stahlbau. The setting of the story: the east coast of Scotland.

Around 1,500 kilometres from our site in Holdorf, a tyre manufacturer with production in Scotland contracted a plant builder from Austria with a project you wouldn't expect to see everyday. The contract did not just include the construction of pipeline bridges, but also transportation to Scotland and the assembly directly on site in Dundee. The idea was to save time and money by completing the pre-assembly in Germany. A case for the experienced specialists of WURST Stahlbau. 

Coastal climate challenge
We were able to fulfil an additional wish of the tyre manufacturer in the neighbouring hot dip galvanizing Holdorf: the high-quality galvanization of the pipes. For this, they were separated into individual parts of 12 metres in length, 1 metre in width and 0.65 metres in height. “If the client had not already asked for the parts to be galvanized, we would have recommended it, in any case. With the coastal climate, the need for corrosion protection is very high”, states Benjamin Wagner, Sales Engineer at WURST. 

Galvanized products are able to withstand wind and weather conditions for decades. Even in salty atmospheres, corrosion protection of up to C5 can be achieved. “We have often worked together with hot dip galvanizing Holdorf. Here, we can rely on quick and high-quality processing.”

Large hurdles
A particular challenge for our colleagues in Holdorf was to cause as little warping of the components as possible, in spite of the 450 degrees Celsius hot molten zinc. In the end, everything was to be pre-assembled precisely, whereby the pipe bridges had to have two properties at the same time: Stability and mobility. This is the only way they can resist storms or even permit possible heat expansion.  

There were also a few tricky tasks waiting for WURST Stahlbau. One of these was that the transportation was not entirely typical. The pre-assembled pipeline bridges were taken to Dundee with three flat-bed lorries – a journey of around 1,500 kilometres. “We moved around 250 metres of pipeline bridges, comprised of steel frames and brackets for the pipe, to Scotland”, explains Wagner.“
Part of these were elevated at 15 metres, however two thirds were built in closer to the ground.” The assembly on site in Dundee wasn’t a problem for WURST as the many grounded metres of bridge ensured a stable structure.
The much greater challenge was something else: We had to assemble the structure according to the British Safety At Work Act. And this has even more stringent requirements than the German equivalent.
 
Experienced teamwork
"This project was really no ordinary task for us. It had a few obstacles to work around – and yet on the whole, everything worked out really well”, Wagner sums up. He is also pleased with the complex cooperation, but that is nothing new for him. This is not the first time that WURST Stahlbau is working with hot dip galvanizing Holdorf.
“Our customers know that we really roll our sleeves up when it starts to get complicated.”

C5 – WHAT IS THAT?
Without corrosion protection, steel structures often look rather old even after just a few years. But it is not just their looks that suffer, their structure suffers too. This makes it all the more important to give structures a coating that will protect them from corrosion. These are divided into categories from C1 (very low) to C5 (very high). 

C1 is used, for example, in heated rooms such as offices. C5 protects industrial plants near the coast, for example, because here they have to withstand a high level of humidity and a harsh, salty atmosphere.

Further references of the Seppeler Group

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