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This document specifies the characteristics and requirements for components such as pipes, fittings, and valves made from one of the following materials intended to be used for thermoplastics piping systems under internal pressure from the media or vacuum conditions in the field of industrial applications above and below ground (including buried): — polybutene (PB); — polyethylene (PE); — polyethylene of raised temperature resistance (PE-RT); — crosslinked polyethylene (PE-X); — polypropylene (PP). NOTE 1 Requirements for industrial valves are given in this document and in other standards (see clause 2) This document is applicable to either PB, PE, PE-RT, PE-X, or PP pipes, fittings, valves, and their joints and to joints with components of other plastics and non-plastic materials, depending on their suitability, intended to be used for the conveyance of liquid and gaseous media as well as solid matter in suspension for industrial applications. Some examples (but not limited to) of industrial piping applications: — chemicals; — industrial sewers; — power engineering (e.g. cooling and general purpose water); — mining; — electroplating and pickling; — semiconductor; — agriculture; — fire fighting; — water treatment; — geothermal; — compressed air; — carbon dioxide (wet or dry capture, transportation, utilisation, and storage). NOTE 2 Where relevant, national regulations (e.g. water treatment) are applicable, other application areas are permitted if the requirements of this document and/or applicable national requirements are fulfilled. National regulations in respect of fire behaviour and explosion risk are applicable. Characteristics and requirements for pipes, fittings, and valves that are applicable for all materials (PB, PE, PE-RT, PE-X, or PP) are covered by the relevant clauses of this document. Characteristics and requirements which are dependent on the material are given in the relevant annex for each material (see Table 1).