ISO 11439:2013规定了轻型可再充气气瓶的最低要求，该气瓶仅用于车载储存高压压缩天然气，作为汽车燃料，用于固定气瓶。使用条件不包括车辆碰撞等可能产生的外部载荷。 ISO 11439:2013涵盖了任何无缝钢、无缝铝合金或非金属材料结构的气缸，使用了适用于指定使用条件的任何设计或制造方法。它不包括不锈钢气瓶。 ISO 11439:2013使用200巴作为参考工作压力，但也可以使用其他工作压力。 ISO 11439:2013涵盖的气瓶被指定为1型、2型、3型和4型。

ISO 11439:2013 specifies minimum requirements for light-weight refillable gas cylinders intended only for the on-board storage of high pressure compressed natural gas as a fuel for automotive vehicles to which the cylinders are to be fixed. The service conditions do not cover external loadings that can arise from vehicle collisions, etc. ISO 11439:2013 covers cylinders of any seamless steel, seamless aluminium alloy or non-metallic material construction, using any design or method of manufacture suitable for the specified service conditions. It does not cover cylinders of stainless steel. ISO 11439:2013 uses 200 bar as a reference working pressure, but other working pressures can be used. Cylinders covered by ISO 11439:2013 are designated Type 1, Type 2, Type 3 and Type 4.