Quick View. High Quality Hot Rolled Iron Steel Q345 Alloy Steel Plate. FOB Price US $450-600 / Ton. Min. Order 1 Ton. Contact Now. Video. Quick View. ASTM A387 Gr11 A709 A572 Gr65 Gr55 Structural Steel Plate. FOB Price US $500-900 / Ton.A387 Gr11 CL2|A387GR11CL2|A387-GR.11 CL2 Steel material 16mo3 High Strength ASTM A387 Gr11 Cl2 Steel PlateMay 12, 2015Steel Grade ASTM A387 Gr11 CL2,A387 Gr11 Cl2 Normalized+Tempered plate . Relative steel grades P265GH,P295GH,P355GH,16Mo3,15Mo3,A204 Grade A,A285 Grade C,SA299 Grade A,SA387GR11CL1,A387GR11CL2,A387GR22CL2,Q345R. Main application:Boiler steel plates are used to build boilers and pressure vessels such as petroleum, chemical industry, power plants.