Profile: Champak Steel & Engg. Co. is a manufacturer, supplier, importer and exporter of abrasion resistant steel, manganese steel, armour steel, carbon steel, and special alloys in forms of sheets & coils. Our product range include plates made from Gr. 11 cl. 2 SA 387 which is pressure vessel grade steel used in applications at elevated temperature. The resistance properties of this steel is highly necessary applications where sou gases are concern.