Home / Standards / GB/T 1149.17-2023 GB/T 1149.17-2023 Active Internal combustion engines—Piston rings—Part 17:Coil-spring-loaded oil control rings made of steel 内燃机 活塞环 第17部分:钢质螺旋撑簧油环 Standard Type GBT ICS 27.020 CCS J 92 Status 现行 Issue Date 2023-12-28 Implementation 2024-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A