Plastics piping systems for water supply, and for drainage and sewerage under pressure - Polyethylene (PE) - Part 4: Valves; German version prEN 12201-4:2010
Plastics piping systems for renovation of underground water supply networks - Part 3: Lining with close-fit pipes; German version EN 14409-3:2004— 30 стр.
Plastics piping systems for non-pressure underground drainage and sewerage - Polyethylene (PE) - Part 1: Specifications for pipes, fittings and the system; German version EN 12666-1:2005+A1:2011— 35 стр.
Plastics piping systems for water supply, and for drainage and sewerage under pressure - Polyethylene (PE) - Part 4: Valves; German version EN 12201-4:2012— 20 стр.
