DIN 16963 Pipe Joints and Elements for High Density Polyethylene (HDPE) Pressure Pipelines, Types 1 and 2; Injection Moulded Tee Pieces for Socket-welding, Dimensions
DVS 2207-1-1995 "Welding of thermoplastics - Heated tool welding of pipes, pipeline, components and sheets made from PE-HD" has been changed from DVS 2207-2-1986 "Welding of thermoplastic polymers, PE-HD (polyethylene of high density); heated tool butt welding; pipes and pipeline parts for sewers and sewage discharges".