Projects of ISO/TC 138/SC 7

Document number Begin Title Comment
ISO/WD 4427-4 2026-05-27 Plastics piping systems for water supply and for drainage and sewerage under pressure - Polyethylene (PE) - Part 4: Part 4: Valves More  Comment 
ISO/DIS 4437-4 2024-12-18 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves More  Comment 

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