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 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 ...