ASTM A387 Grade 11 Alloy Steel Plates,Manafactures,Suppliers,Stockists,Exporters Introduction:-ASTM A387 Grade 11 Alloy Steel Plates ASTM A387 Grade 11 is a high-quality alloy steel plate designed for use in high-temperature and pressure environments. This chromium-molybdenum (Cr-Mo) alloy steel offers excellent resistance to oxidation, corrosion