supply of 3000ltr s . s water tanker . , water supply item , supply of s . s . water tanker capacity 3000ltr with double layer type of trailler two wheel thikcness of the water tank plate ( min ) ( mm ) 3 . 15 milimitter , overall length of trailers ( shall not exceed 5m upto 6 tonne load 4 meter . over all width of trailler between extreme points ( meter ) 2 . 5 meter overall height of trailler with tyre inflated from the supporting surface to top of platform ( meter ) 3 meter , overall height of trailler with tyre inflated from the supproting surface to sideboard ( meter ) 2 . 5 meter type of suspension system leaf spring . diameter of the axle of chassis ( min ) ( mm ) 75 millimeter .