往复式大功率内燃机 进、排气门 技术条件
Reciprocating high power internal combustion engines - Intake and exhaust valves - Specification
2014-05-06
GOST R 54909-2012
Металлопродукция из легированной стали и сплавов для клапанов двигателей внутреннего сгорания. Технические условия
来自合金钢和内燃机阀门合金的金属产品 规格
BS 5672-1991
Specification for designation of the direction of rotation and of cylinders and valves in cylinder heads, and definition of right-hand and left-hand in-line engines and locations on an engine for reciprocating internal combustion engines
气缸旋转方向和气缸盖中气缸和阀门的命名规范 以及往复式内燃机用右侧和左侧直列发动机和发动机上位置的定义