the steel flange dredging hose are used with dredgers for silt/gravels conceyance. the steel flange dredging hose are used with dredgers for silt/gravels conceyance.thicknessof pipe wall is from 18mm-70mm,the suitable temperature is from -20-50,it is convenient toinstall ,flexible to use ,safe ,abrasion-resistant and bending -resistant.