تولید کننده astm a479 با بهره وری بسیار موثر
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 …