1 . There are 23 reinforcing ribs on the four sides of the outer skirt of the barrel mouth, 3 longitudinal reinforcing ribs on the outer front edge, 12 reinforcing ribs on the left and right sides of the barrel edge .3. There are 8 reinforcing ribs connecting the barrel cover and the barrel body. The thickness of the reinforcing ribs is ≥6.0mm .240 litre wheelie bin manufacturers.