... 1>. Standard: ASTM Grade: A572 Grade 50, A709 Grade 50, A633D, A633E, A588 Grade B2>. Standard: JIS G3106 Grade: SM490B, SM520, ... , S355JR, S355J0, S355J2, S355K2,S355NL6>. Standard: Special Condition Grade: WH60A, WH70B, BB41BF, BB503, CortenB, SHT60, Q550CFC, ... , 12CrMoVNi, 30CrMnSiABridge Steel Plate:1>. Standard: Special Condition Grade: 14MnNbq2>. GB Q235qC, Q345qC (16Mnq), Q370qC, Q420qCBuilding ...