DIN 16962-5:2000 Pipe joints and components of polypropylene (PP) for pipes under pressure, PP-H 100, PP-B 80 and PP-R 80 - Part 5: General quality requirements, testing
DIN VDE 0281-1:2003 Cables of rated voltages up to and including 450/750 V and having thermoplastic insulation - Part 1: General requirements; German version HD 21.1 S4:2002
DVS 2207-6-2003 history
2003DVS 2207-6-2003 "Welding of thermoplastics - Non-contact heated tool butt welding of pipes, pipeline components and sheets - Methods, equipment, parameters"