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NA 119

DIN Standards Committee Water Practice

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Projects of NA 119

Number: 448

ISO/AWI 21138-1 2026-01-21 Plastics piping systems for non-pressure underground drainage and sewerage - Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) - Part 1: Material specification and performance criteria for pipes, fittings and systems More  Comment 
ISO/AWI 21138-2 2026-01-21 Plastics piping systems for non-pressure underground drainage and sewerage - Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) - Part 2: Pipes and fittings with smooth external surface, Type A More  Comment 
ISO/WD 26301 2026-01-15 Marine environmental impact assessment (MEIA) - Technical specifications for marine biotic surveys in the international seabed area - Benthic macrofauna More  Comment 
DIN 19522 2026-01-14 Cast iron drainage pipes and fittings without socket (SML) More  Comment 
DIN 1221 2026-01-14 Dirt trap for manhole covers More  Comment 
DIN CEN/TS 1046 rev 2026-01-12 Thermoplastics piping and ducting systems - Outside the building structures for gravity and pressurised systems - Trench installation More  Comment 
DIN EN ISO 24577 2026-01-12 Hydrometry - Use of noncontact methods for measuring water surface velocity and determining discharge (ISO/DIS 24577:2026); German and English version prEN ISO 24577:2026 More  Comment 
DIN CEN/TS 12666-2 rev 2026-01-09 Plastics piping systems for non-pressure underground drainage and sewerage - Polyethylene (PE) - Part 2: Guidance for the assessment of conformity More  Comment 
DIN EN 1852-1 2026-01-09 Plastics piping systems for non-pressure underground drains and sewers - Polypropylene (PP) - Part 1: Specifications for pipes, fittings and the system More  Comment 
ISO/AWI 26157 2026-01-06 Small hydropower plants - Site selection planning More  Comment 

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