... Tapered plate.Catalog No.Steel typeDimension(mm)GradeStandard1Carbon structural steelsH:5-350W:900-4800I:3000-25000Q235,Q275GB/ ... -2008S45C,S50C,S55CJIS G4051:20053High strength low-alloy structural steelsQ345-Q460-Q550-Q690GB1591-2008A36,A283,A529ASTMSM400,SM490, ... 120W:900-4800I:3000-2500016MnDR,15MnNiDR,09MnNIDRGB3531-20089Steel plates for building structureH:5-150W:900-4800I:3000-25000Q235GJ(Z), ...