本文件适用于作为起重机承载结构一部分的液压缸。它打算与ISO？一起使用8686系列和ISO因此，它们通过设计和理论验证，规定了防止液压缸机械危险的一般条件、要求和方法。 本文件不适用于液压管道、软管、连接器和与气缸一起使用的阀门，或由（碳钢）以外的其他材料制成的气缸。

This document applies to hydraulic cylinders that are part of the load carrying structure of cranes. It is intended to be used together with the ISO 8686 series and ISO 20332, and as such they specify general conditions, requirements and methods to prevent mechanical hazards of hydraulic cylinders, by design and theoretical verification. This document does not apply to hydraulic piping, hoses, connectors and valves used with the cylinders, or cylinders made from other material than (carbon) steel.