Pipework systems
Plastic pipelines
Plastics
Colour
Physical properties of materials
Marking
Polyethylene
Mechanical properties of materials
Potable water
Dimensions
Pipe fittings
Water
Temperature
Pressure
Water supply
Testing conditions
Link: BS ISO 4427-3:2019 Plastics piping systems for water supply, and for drainage and sewerage under pressure. Polyethylene (PE) Fittings
Source: BSI Standards