alloy steel plate 2.Standard:ASTM,AISI,DIN,EN,GB 3.Thick:0.5~500mm 4.Width:0.1~3m,Length ... Condition Grade: WH60A, WH70B, BB41BF, BB503, CortenB, SHT60, Q550CFC, NR400ZL7>. GB 16Mn, 15MnV, 15MnVN, Q460C Shipbuilding and Offshore Platform Steel Plate ... the first Chinese phonetic alphabet; Numerical-represent the yield point;GB/T1591-94Used for engineering machinery, steel structure, Bridges, buildings, ...