The ASTM A588 GR.A/B PLATES are the steel plates of the specification ASTM A588. These plates are having higher strength and are having low- alloy composition although it is structural steel. The steel plates of this grade specification are manufactured and supplied by the Rexton steel & alloys. https://www.rextonsteel.com/astm-a588-gr-a-b-steel-plate-supplier-stockist.html