根据起重机预期寿命内的运行循环次数和代表额定载荷状态的载荷谱系数，建立起重臂起重机的分类。应结合ISO 4306-1阅读。

Establishes classifications for jib cranes, based on the number of operating cycles to be carried out during the expected life of the crane and a load spectrum factor which represents the nominal state of loading. Should be read in conjunction with ISO 4306-1.