astm a564 با کارایی بالا که در ساختمان ها استفاده می شود
ASTM A564 Properties (Chem., Mech. & Rankings) 2022 ASTM A564 is a Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes. Category Corrosion-Resisting and Heat …