Pressure pipelines made from thermoplastics materials – Metal and plastics compression fittings for polyethylene (PE) pipes – General quality requirements and testing; Text in German and English
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 09/01/2013

Pressure pipelines made from thermoplastics materials – Metal and plastics compression fittings for polyethylene (PE) pipes – General quality requirements and testing
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/2008