آرشیو برچسب: A27A27M

          Commonplace Specification for Metal Castings, Carbon, for Common Software1 This customary is issued beneath the fastened designation A27/A27M; the quantity instantly following the designation signifies the 12 months   of unique adoption or, within the case of revision, the 12 months of final revision. A quantity in parentheses signifies the 12 months of final […]