规定了波纹柔性金属软管的设计特点，该软管可用于在爆炸性环境或存在火灾风险的环境中保护电线和电缆。这些软管可用于静电保护，或用于保护不经常、偶尔或每周不到一次移动的电缆。还提供了这些软管的使用说明以及型式认证所需的测试。

Specifies the design characteristics of corrugated flexible metallic hose which can be used to protect electrical wire and cable in explosive atmospheres or atmospheres where there is a risk of fire. These hoses can be used as static protection or for the protection of cables moved infrequently, occasionally, or less than once week. Also provides instructions for the use of these hoses and the tests required for type approval.