
استاندارد ASTM A20 در خصوص الزامات عمومی ورق های فولادی در ساخت ظروف تحت فشار به زبان انگلیسی 33 صفحه Standard Specification for General Requirements for Steel Plates for Pressure Vessels Scope 1.1.1 This general requirements specification also covers agroup of supplementary requirements that are applicable toseveral of the above product specifications as indicated therein.Such requirements are provided for use if additional testing oradditional restriction ...