CEN/TC 155
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 62508 | EN 1555-5:2021 | Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 5: Fitness for purpose of the system | Izstrādē |
| 31488 | EN 1555-5:2010 | Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 5: Fitness for purpose of the system | Atcelts |
| 5998 | EN 1555-5:2002 | Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 5: Fitness for purpose of the system | Atcelts |
| 77954 | EN 1555-4:2025 | Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves | Izstrādē |
| 62512 | EN 1555-4:2021 | Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves | Izstrādē |
| 31486 | EN 1555-4:2011 | Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves | Atcelts |
| 5997 | EN 1555-4:2002 | Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves | Atcelts |
| 77951 | EN 1555-3:2025 | Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 3: Fittings | Izstrādē |
| 62506 | EN 1555-3:2021 | Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 3: Fittings | Izstrādē |
| 38159 | EN 1555-3:2010/FprA1 | Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 3: Fittings | Izstrādē |
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