本文件规定了材料、设计、施工和工艺、制造工艺、制造时的检查和测试的最低要求: -2类复合材料环箍缠绕圆筒或管，仅在圆柱形部分上带有均载金属衬套和复合钢筋； -水容量高达450升； -压缩或液化气体的储存和运输； -在基体或钢丝内具有碳纤维、芳纶纤维或玻璃纤维（或其混合物）复合增强材料的圆柱体和管道，以提供周向增强； -最低设计寿命为15年。 本文件不涉及可拆卸保护套的设计、安装和性能。 注1:本文件中提及的气瓶包括复合管（如适用）。 注2:ISO 11439适用于天然气车辆上用作燃料容器的气瓶，ISO 11623涵盖了复合气瓶的定期检查和重新测试。

This document specifies minimum requirements for the material, design, construction and workmanship, manufacturing processes, examination and testing at time of manufacture for: — type 2 composite hoop wrapped cylinders or tubes with a load-sharing metal liner and composite reinforcement on the cylindrical portion only; — water capacities up to 450 l; — the storage and conveyance of compressed or liquefied gases; — cylinders and tubes with composite reinforcement of carbon fibre, aramid fibre or glass fibre (or a mixture thereof) within a matrix or steel wire to provide circumferential reinforcement; — a minimum design life of 15 years. This document does not address the design, fitting, and performance of removable protective sleeves. NOTE 1 References to cylinders in this document include composite tubes if appropriate. NOTE 2 ISO 11439 applies to cylinders intended for use as fuel containers on natural gas vehicles and ISO 11623 covers periodic inspection and re-testing of composite cylinders.