内燃机用阀门钢|沙特标准|SASO-ISO-683-15
SASO-ISO-683-15
Heat-treatable steels, alloy steels and free-cutting steels – Part 15: Valve steels for internal combustion engines
可热处理钢、合金钢和易切削钢 – 第 15 部分:内燃机用阀门钢
Applying Type : Standard Specification
Standard Year : 1992
Approval Year : 2007