... plate.Catalog No.Steel typeDimension(mm)GradeStandard1Carbon structural steelsH:5-350W:900-4800I:3000-25000Q235,Q275GB/T700-20062Quality carbon ... Z35GB712-2000API GB53136Steel plates for boilers and pressure vesselsH:5-300W:900-4800I:3000-25000Q245R,Q345R,Q370R,18MnMonbR, ... 3000-2500016MnDR,15MnNiDR,09MnNIDRGB3531-20089Steel plates for building structureH:5-150W:900-4800I:3000-25000Q235GJ(Z),Q345GJ(Z), ...