China manufacture tianjin scaffolding perforted standard galvanized steel plank with hook Steel plank specifications Specifications(mm)thickness(mm)width(mm)height(mm) 160*451.0-2.216045 210*451.0-2.221045 225*381.0-2.222538 230*631.0-2.223063 240*451.0-2.224045 250*501.0-2.225050 300*501.0-2.230050 420*451.0-2.242045 450*451.0-2.245045 480*451.0-2.248045 500*501.0-2.250050
