This standard covers ferrous piston rings, 200 through 1000 millimeters diameter, for internal combustion engines, steam engines and compressors. Standards for smaller sizes are covered by Standards for the Society of Automotive Engineers.
本标准涵盖直径为200至1000毫米的黑色活塞环,用于内燃机,蒸汽机和压缩机。较小尺寸的标准由汽车工程师协会标准涵盖。