... 60 ton 3.The max thickness is 350mm hot rolled wide and heavy steel plate is our best Superior products.Our ... Tapered plate.Catalog No.Steel typeDimension(mm)GradeStandard1Carbon structural steelsH:5-350W:900-4800I:3000-25000Q235,Q275GB/T700-20062Quality carbon ... Z25,Z35GB712-2000API GB53136Steel plates for boilers and pressure vesselsH:5-300W:900-4800I:3000-25000Q245R,Q345R,Q370R,18MnMonbR,13MnNiMoR, ...