2013NF T54-065-3:2013 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 3: fittings
2010NF T54-065-3:2010 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 3 : fittings.
0000 NF T54-065-3/A1:2005
0000 NF T54-065-1:2003
1989NF T54-079:1989 PLASTICS. POLYETHYLENE CONNECTION SOCKETS FOR GASEOUS FUEL SUPPLY NETWORKS. SPECIFICATIONS AND TEST METHODS.
1988NF T54-069:1988 PLASTICS. MECHANICAL UNIONS FOR POLYETHYLENE DISTRIBUTION NETWORKS FOR GASEOUS COMBUSTIBLE. SPECIFICATIONS AND TEST METHODS.
1987NF T54-066:1987 PLASTICS. POLYETHYLENE FITTINGS WITH ELECTROWELDABLE INSERTIONS FOR GASEOUS COMBUSTIBLE DISTRIBUTION NETWORKS. SPECIFICATIONS AND TEST METHODS.