astm a351 cf8m با راندمان بالا برای تولید انرژی و برق
ASTM A351-2018. Designation: A351/A351M − 18Standard Specif i cation forCastings, Austenitic, for Pressure-Containing Parts 1This standard is issued under the f i xed designation A351/A351M; the … ادامه مطلب