This part of GB/T 1149 specifies the basic dimensional characteristics of rectangular steel piston rings with piston ring types R, B, BA and M (hereinafter referred to as rectangular steel rings). This part applies to rectangular steel rings for reciprocating internal combustion engines with cylinder diameters ranging from 30 mm to 160 mm. Rectangular steel rings for compressors operating under similar conditions can also be used as a reference.
GB/T 1149.8-2008 Internal combustion engines.Piston rings.Part 8:Rectangular rings made of steel has been changed from GB/T 14222-1993 Internal combustion engines--Piston rings--Rectangular rings.