Plastics piping systems - Polyethylene (PE) tapping tees - Test method for impact resistance of an asssembled tapping tee; German version EN 1716:1997— 4 стр.
Plastics piping and ducting systems - Thermoplastics pipes - Test method for resistance to external blows by the round-the-clock-method; German version EN 744:1995— 9 стр.
