... sandwich panel,corrugated steel plate Commodit light steel structure workshop SpecificationsStandard GB ,AISI , ASTM , BS, JIS ,DINMaterial & Grade Q235 , Q345,H C Z steel . sandwich ... customer ‘s designType light / heavy Using workshop, steel walkway and floor , steel structure platform ,steel prefabricated house ,steel frame part ,steel structure bridge, warehouse Surface galvanized , painted ...