... :Longitudinal profile plate or Tapered plate.Catalog No.Steel typeDimension(mm)GradeStandard1Carbon structural steelsH:5-350W:900- ... Q550-Q690GB1591-2008A36,A283,A529ASTMSM400,SM490,SM520,SM570JIS G31064Structural steel for bridgesH:6-120W:900-4800I:3000-25000Q235q, ... ,Q960GB/T16270-200912Wear-resistant steel H:5-150W:900-4800I:3000-2500020MnTiB,N,360,NM400 bailey bridge steel construction structure