Plastics piping systems for the supply of gaseous fuels - Unplasticized
polyamide (PA-U) piping systems with fusion jointing and mechanical
jointing - Part 3: Fittings
Fixed firefighting systems - Gas extinguishing systems - Part 2:
Physical properties and system design of gas extinguishing systems for
FK-5-1-12 extinguishant (ISO 14520-5:2024, modified)