BS EN ISO 21012:2018规定了设计、施工、型式和生产测试以及标记要求 用于在以下范围内输送低温流体的非绝缘低温软管: 工作条件范围:工作温度:从-270°C到+65°C；公称尺寸（DN）:从10到100。用于安装任何联轴器的端部配件在本文件范围内，但联轴器 以其他标准为准。软管的设计和测试应满足普遍接受的额定压力，即。 至少公关40分。然后可以选择PR等于或大于最大允许值的软管 所用设备的压力（PS）。交叉引用: ISO 21028-1ISO 7369ISO 10806ISO 23208ISO 21010购买时可用的所有现行修订版均包含在本文件的购买中。

BS EN ISO 21012:2018 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.Cross References:ISO 21028-1ISO 7369ISO 10806ISO 23208ISO 21010All current amendments available at time of purchase are included with the purchase of this document.