Stainless Steel Digesters for Hungarian Biogas Project

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Thyssen Krupp Nirosta GmbH

In the past ten years Thyssen Krupp Nirosta has supplied around 1,500 tons of stainless steel for various projects carried out by the Vechta-based company. Depending on the purpose, different grades of stainless steel are used, for example for the tank walls in contact with the liquid or gas.

Thinner Steel – Lower Costs

“The majority of our deliveries have been our standard sheet steel Nirosta 4301 specially optimized for these applications,“ says Martin Stöckl from the Thyssen Krupp Nirosta sales team. “What's particularly important for us is the cold-worked condition, 2H. This means thinner steel can be used to build the digesters without any loss of stability. It also means a significant cost saving.“

Extremly Dense and Smooth Surface

But also the extremely dense and smooth surface of the Nirosta 4301 is an advantage: “The dense surface of Nirosta 4301 2H gives aggressive substances no opportunity to attack the material,“ says Weltec Biopower sales chief Schierhold. “Bacteria have no chance to take hold, so corrosion is nipped in the bud, which is an important factor for longevity and efficiency.“

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