DIN 50930 6 PDF

Buy DIN CORROSION OF METALS – CORROSION OF METALLIC MATERIALS UNDER CORROSION LOAD BY WATER. As the effect of metallic materials on the quality of drinking water is not covered by these standards, DIN has been introduced at the. DIN October Corrosion of metals – Corrosion of metallic materials under corrosion load by water inside of pipes, tanks and apparatus – Part 6.

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Systems are to xin assessed on the basis of data obtained when carrying out tests as in DIN on pipes of small nominal sizes, taking not only the time periods described in subclause 7. However, it should be noted that solely introducing polyphosphates will increase the release of corrosion products by the above-mentioned materials, and the effectiveness of such measures should be evaluated as specified in subclause 9. These values relate to samples representative of the average water consumption over the period of a week.

Get a quote for certification of systems, products or services, and get certified. Materials of a different composition than those listed below may be used if comparative tests carried out as specified in DIN show that an equivalent consumer protection is provided. In case of doubt, the German-language original should be consulted as the authoritative text.

DIN (英文版)金属腐蚀管、槽及装置内水造成金属材料腐蚀 第6部 饮用水成分影响_图文_百度文库

Gilt in Verbindung mit DIN 500930 und Anforderungen hinsichtlich der hygienischen Eignung in Kontakt 5030 Trinkwasser. In systems containing hot-dip galvanized ferrous materials, a change in drinking water quality in terms of its suitability for human consumption is deemed acceptable if the following concentrations in the galvanized coating are not exceeded values given as percentages by mass: DIN October Test yourself or your business online.

There is no evidence that the release of corrosion products from nickel coatings is influenced by the introduction of inhibitors. For Cu-Ni alloys, see subclause 8.

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Classification of low corrosivity of indoor atmospheres. For this reason, water which remains stagnant e.

Corrosion of metals – Corrosion of metallic materials under corrosion load by water inside of tubes, tanks and apparatus – Part 6: When this happens, however, corrosion products in dissolved or solid form are released into the drinking water. The mean value represents the corrosion loading of the drinking water under the given test conditions, and is the basis diin assessing the suitability of a material, component or water treatment idn in terms of fulfilment of the requirements specified in the Dun.

Inhibitors may be introduced into existing systems containing components made of copper or copper alloys, hot-dip galvanized ferrous materials and unalloyed or low-alloy ferrous materials under certain conditions. For dated references, subsequent amendments to or revisions of any of these publications apply to this standard only when incorporated in it by amendment or revision.

If so, the water is to be assessed as specified therein. There are no limitations for the use of small pipe and valve components e. Values for the above parameters are to be obtained from the responsible water supplier.

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As there has not been enough experience with Cu-Ni alloys, limits cannot be specified and testing as in DIN is to be carried out. Corrosion of metals – Corrosion of metallic materials under corrosion load by water inside of pipes, tanks and apparatus – Part 6: In accordance with the idn schedule specified in DINin which stagnation times alternate with short phases during which the water flows, samples of water conveyed in systems 05930 materials which tend to form scale are to be taken after stagnation times ranging from 0,5 hours to 16 509930, with eight samples making up a sampling interval, T.

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The parameters listed in table 1 are to be known when evaluating their influence on changes in drinking water quality due to the presence of corrosion products, particularly as regards the suitability of the water for human consumption. Influencing factors for stainless steels.

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This standard describes the influence of material characteristics, water-related parameters and operating conditions on the quality of drinking water in contact with metallic 50903 used in water supply systems, particularly where corrosion products are relevant to water quality, and where limit values are specified in the Trinkwasserverordnung.

A change in water quality due ein interaction with a material is considered as corrosion damage if the drinking water no longer meets legal requirements as a result.

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If the legal requirements for drinking water quality cannot be met in existing systems due to poor water quality, adverse operating conditions or the dkn of unsuitable materials, measures can be taken to 509330 this by treating the water.

Annex C of DIN To ensure this, there should be continuous flow diin the system, and the flow should be laminar or turbulent. November Number of pages: Nickel coatings on various base materials are not suitable for use in drinking water supply systems, since the limit values specified in the Trinkwasserverordnung cannot be met, even when the system is operated according to regulations.

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