Aus welchem Material sollte eine Schachtabdeckung sein?
The use of stainless steel is particularly recommended for use with drinking water or wastewater due to its outstanding corrosion resistance and hygienic properties. Wastewater often contains aggressive chemical substances that can quickly lead to corrosion. Depending on the type of stainless steel, the material offers high resistance to corrosion and rust formation compared to concrete, cast iron or ordinary steel. Stainless steel is robust and resistant to mechanical stress and environmental influences.
Your investment pays off
Even higher acquisition costs are amortised by minimal maintenance requirements, a long product service life and the elimination of expensive renovation measures. In areas of application with high hygiene requirements, the material impresses with its simple handling. It is easy to clean and disinfect without any permanent loss of quality. This is very important in order to comply with the hygiene standards in drinking water systems. Only in this way can the best quality of the valuable resource of drinking water be guaranteed. A plus point that should not be overlooked is aesthetics. Stainless steel manhole covers in particular have a modern and attractive appearance. This can be a relevant reason for a purchase decision, especially in urban areas and public spaces. Last but not least, stainless steel is a fully recyclable material and therefore protects resources.
Even higher acquisition costs are amortised through minimal maintenance requirements, a long product service life and the elimination of expensive renovation measures. In areas of application with high hygiene requirements, the material impresses with its simple handling. it is easy to clean and disinfect without any permanent loss of quality. This is very important to comply with hygienic standards in drinking water systems. This is the only way to guarantee the best quality of the valuable resource drinking water. A plus point that should not be overlooked is aesthetics. Stainless steel manhole covers in particular have a modern and attractive appearance. This can be a relevant reason for your purchase decision, especially in urban areas and public spaces. Last but not least, stainless steel is a fully recyclable material and thus protects resources.
Which stainless steel grade is suitable for a manhole cover
Only austenitic stainless steels are used in the water industry. According to DIN 10088-1, stainless steels are divided into different groups. Chromium-nickel steels are listed in the V2A group. The most common grades are 1.4301, 1.4541 and 1.4307. Chrome-nickel-molybdenum steels are referred to in the V4A group. These are characterised by even higher corrosion resistance compared to V2A steels. The most well-known representatives are grades 1.4404 and 1.4571.
The specified stainless steel grades consistently impress with their high corrosion resistance. They are resistant to many chemical compounds that can occur in water systems. This reduces the likelihood of material failure and enables a longer service life without cost-intensive maintenance work or regular refurbishment.
While 1.4307 (also referred to as AISI 304 L), for example, is already highly resistant to corrosion and is used convincingly in numerous wastewater applications, 1.4404 (AISI 316 L) offers additional corrosion resistance to chloride-containing liquids such as seawater or aggressive chemicals. For seawater or very aggressive chemicals, there are also special stainless steels (duplex steels) that can withstand these influences.
Stainless steel manhole covers can be produced in various shapes and sizes to meet individual requirements. They can be modified accordingly to meet customer design or functional requirements.
Our summary:
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