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Standard [CURRENT]
This standard is part of the DVGW body of rules.
This standard is part of the DVGW body of rules.
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The standard applies to filter pipes with slotted bridge perforation and solid wall pipes made of steel in nominal diameters DN 100 to DN 1000, as well as their connections for wells used for water extraction. The dimensions, masses, designation, designs, materials and hygiene requirements are specified. The standard has been prepared by DIN-DVGW-Gemeinschaftsunterausschuss NA 119-07-03-01 AA "Bauteile und Produkte für Bohrtechnik und Brunnenbau" ("Components and products for drilling technology and well construction") at DIN Standards Committee Water Practice (NAW).
This document replaces DIN 4922-1:1978-02 , DIN 4922-2:1981-04 , DIN 4922-3:1975-12 , DIN 4922-4:1999-10 , DIN 4935-1:2002-06 , DIN 4935-2:2002-06 , DIN 4935-3:2002-06 .