Large-diameter dredging hoses are divided into large-diameter water conveying hoses, large-diameter suction and drainage hoses, large-diameter oil-resistant hoses, large-diameter acid- and alkali-resistant hoses, large-diameter high-temperature-resistant hoses, large-diameter steam hoses, and large-diameter wear-resistant hoses. Large-caliber water delivery hoses are mainly used for retaining or pumping water and other neutral liquids at room temperature.  They are mainly used for industrial suction and drainage, agricultural and forestry irrigation, urban drainage, etc. Large-diameter suction hoses are mainly used for dredger homework. River dredging, large-diameter oil-resistant hoses are mainly used for the delivery and suction of gasoline, diesel, petroleum, smooth oil, emulsified oil, spark oil and other media. Large-diameter high-temperature hoses are mainly used in high-temperature places such as superheated water and saturated steam. Large-caliber abrasion-resistant rubber hoses are mainly used for the conveyance and suction of solid particles and powdery media, and for the conveyance of cement mortar.
 

Large-diameter dredging hoses can be divided into high-pressure large-diameter hoses and low-pressure large-diameter hoses according to the task pressure form. A medium- and low-pressure large-diameter hose is further divided into a low-pressure delivery large-diameter hose, positive pressure, and a low-pressure suction large-diameter hose, negative pressure. . The high-pressure large-diameter rubber hose skeleton layer is a multilayer steel wire braid or surrounding reinforcement layer. The low-pressure large-diameter hose frame is a multi-layer cloth / cord surround reinforcement layer, plus a spiral steel wire frame reinforcement layer. Negative pressure suction hose adopts a double-layer spiral steel wire frame reinforcement layer structure to ensure that the pipe body is not in the negative pressure task form. Will suck or deform.
 

Large-diameter dredging hoses are processed by different methods. Coil the inner tube containing the core on a coiling machine or a braiding machine with copper-plated steel wire or copper-plated steel wire rope. Also use a large-caliber hose to coil the middle-layer rubber sheet on the coiling machine or braiding machine. Synchronized coiled between every two layers of copper-plated steel wire or copper-plated steel wire rope. Non-structural and non-skeletal hoses  The processing methods of large-diameter hose skeleton layers and hose forming equipment are different.