This document also specifies the test parameters for the test methods referred to in this document. In conjunction with the other parts of the DMS 374 series, this document is applicable to PE pipes, fittings, their joints and to joints with components of PE and other materials, intended to be used under the following conditions: a) a maximum allowable operating pressure (PFA) up to and including 25 bar ; b) an operating temperature of 20 °C as the reference temperature. NOTE 3 - For other operating temperatures, guidance is given in DMS 374‑1: 2021, Annex A.