ISO 21012:2018 PDF

Scope: This document specifies design, construction, type and production testing, and marking requirements for non-insulated cryogenic flexible hoses used for the transfer of cryogenic fluids within the following range of operating conditions: — working temperature: from −270 °C to +65 °C; — nominal size (DN): from 10 to 100. End fittings for mounting of any couplings are within the scope of this document, but the couplings are subject to other standards. It is intended that the hose be designed and tested to satisfy the generally accepted rated pressure i.e. at least PR 40. Hoses may be then selected with a PR equal to or greater than the maximum allowable pressure (PS) of the equipment to which it is to be used.

ISO 21012:2018 Referenced Document

ISO 10806:2003 Pipework - Fittings for corrugated metal hoses
ISO 21010:2017 Cryogenic vessels - Gas/material compatibility
ISO 21028-1:2016 Cryogenic vessels - Toughness requirements for materials at cryogenic temperature - Part 1: Temperatures below -80 degrees C
ISO 23208:2017 Cryogenic vessels - Cleanliness for cryogenic service
ISO 7369:2004 Pipework - Metal hoses and hose assemblies - Vocabulary