本文件规定了PH、PJ、PK、PL和PM带轮槽型线的主要尺寸特征，以及用于除弹性带以外的一般工业应用的相应环形V带轮槽型线。 PK皮带最初是为汽车附件驱动应用而建立的，ISO？9981专门针对该特定领域。

This document specifies the principal dimensional characteristics of V-ribbed pulley groove profiles, together with the corresponding endless V-ribbed belts, of PH, PJ, PK, PL and PM profiles which are used for general industrial applications except elastic belts. The PK belt was originally established for automotive accessory drive applications and ISO？9981 deals specifically with that particular field.