ONORM EN 713-1994 Plastics piping systems. Mechanical joints between fittings and polyolefin pressure pipes. Test method for leaktightness under internal pressure of assemblies subjected to bending
1994ONORM EN 713-1994 Plastics piping systems. Mechanical joints between fittings and polyolefin pressure pipes. Test method for leaktightness under internal pressure of assemblies subjected to bending