CSN EN ISO 21012 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. Original English text of CSN EN Standard. The price of the Standard included all amendments and correcturs.
