Internal combustion engines—Piston rings—Part 11:Half keystone rings made of cast iron
IDT ISO 6624-2:2003
全国内燃机标准化技术委员会(SAC/TC 177)
GB/T 1149的本部分规定了活塞环型号为HK、HKB的楔形铸铁活塞环（以下简称楔形铸铁环）的基本尺寸特征。
本部分适用于气缸直径从38 mm到160 mm的往复活塞式内燃机用的楔形铸铁环。
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