BS ISO 6624-3:2017规定了T型钢制拱顶石环的基本尺寸特征， TB、TBA、TM、K、KB、KBA和KM，直径从70毫米到160毫米，用于 往复式内燃机。交叉引用:ISO 6621-4:2015 ED3 ISO 6622？那么6626呢？那么6626呢？那么6621呢？2:2003ISO 6622？1ISO 6625:1986ISO 6627:2011 Ed 2ISO 1101:2017ISO 6621-3ISO 6621-5ISO 6623:2013 ED3ISO 6621-1ISO 6626-3购买时可用的所有当前修订版均包含在本文件的购买中。

BS ISO 6624-3:2017 specifies the essential dimensional features of keystone rings made of steel, types T, TB, TBA, TM, K, KB, KBA and KM, having diameters from 70 mm up to and including 160 mm, used in reciprocating internal combustion piston engines.Cross References:ISO 6621-4:2015 ED3 ISO 6622?2ISO 6626?1ISO 6626?2ISO 6621?2:2003ISO 6622?1ISO 6625:1986ISO 6627:2011 Ed 2ISO 1101:2017ISO 6621-3ISO 6621-5ISO 6623:2013 ED3ISO 6621-1ISO 6626-3All current amendments available at time of purchase are included with the purchase of this document.