سازنده astm a479 با ضمانت با کیفیت بالا
ASTM A479-2018. ASTM A479-2018. : 400. : Designation: A479/A479M − 18Standard Specif i cation forStainless Steel Bars and Shapes for Use in Boilers andOther Pressure Vessels 1This standard is issued under the f i xed designation A479/A479M; the number immediately following the designation indicates the yearof … ادامه مطلب