ASTM A387 Grade 22 Class 2 Steel Plate Stockist Sai Steel & Engineering Co. may be a framework provided by experts and suppliers of worldwide grade 2 thin steel plates and sold worldwide. We confirmed and passed ISO 9001:2008 certification. All applicable inspections of SA 387 grade 22 class 2 steel plate consistent with the prescribed quality principles. sa 387 grade 22 class 2 Steel Plate Grade and Specification Grades ASTM A387 Grade 5 Class 2,Grade 9 Class 2,Grade 11 Class 2,Grade 12 Class 2,Grade 22 Class 2,Grade 91 Class 2. ASME SA387 Grade 5 Class 2,Grade 9 Class 2,Grade 11 Class 2,Grade 12 Class 2,Grade 22 Class 2, Grade 91 Class 2. EN 10028:16Mo3,13CrMo45,10CrMo910 BS 1501: 620B, 621B,622B