1BZ-5.5/6.3/7.2 series hydraulic folding heavy-duty harrow is a new-type heavy-duty wide disc harrow recently developed by our company. Its main body is made of high-strength alloy steel, with steady structure, wide breadth for working and narrow breadth for transport. Hydraulic system is used for folding, easy for operation. Its breadth is up to 3m after folding. With high efficiency, this product is mainly applicable for large-scale mechanization.