خدمات خوب astm a564 مورد استفاده در ساختمان ها
ASTM A564-2019a (ASTM) ASTM A564-2019a (ASTM) . : 4000. : Designation: A564/A564M − 19aStandard Specif i cation forHot-Rolled and Cold-Finished Age-Hardening Stainless SteelBars and Shapes 1This standard is issued under the f i xed designation A564/A564M; the number immediately following the designation indicates the. ادامه مطلب