DIN 19533:1976-03

Pipe-lines of high-density PE (high-density polyethylene) and low-density PE (low density polyethylene) for drinking water supply; pipes, pipe connections and fittings for pipe-lines. (Rohrleitungen aus PE hart (Polyäthylen hart) und PE weich (Polyäthylen weich), für die Trinkwasserversorgung - Rohre, Rohrverbindungen, Rohrleitungsteile.)