استاندارد بین المللی DIN EN 12061

Thermoplastics Fitting ...

استاندارد بین المللی DIN EN 713

mechanical joints between fittings and polyolefin pressure pipes -test method for leaktightness under internal pressure of assemblies subjected to bending ...

استاندارد بین المللی DIN EN 712

  Thermoplastics piping systems- End-load bearing mechanical joints between pressure pipes and fittings Test method for resistance to pull-out under constant longitudinal force ...

استاندارد بین المللی DIN EN 12294

plastics piping systems - systems for hot and cold water test method for leaktightness under vacuum ...