The hose clamp is a fastener at the joint of the hard and soft pipes. The utility model solves the problem that a dead angle occurs when a throat hoop is used for the connection of small-diameter soft and hard pipes in the prior art, resulting in the leakage of liquid and gas. The throat hoop adopts an open inner and outer ring structure and is fastened with bolts. The hose hoop can effectively solve the problems of dead angle and leakage of liquid and gas in the connection of small-diameter soft and hard pipes. The simple structure and easy manufacturing cost are 30% of the original product. The hose hoop is widely used in motor vehicles, petrochemical, pharmaceutical, food brewing sewage treatment, purification, dedusting, steam car accessories and other machine accessories.

       Features of throat hoop: small friction of worm, suitable for connection of high and medium grade models or parts of anti-corrosion materials. The hose hoop has wide application range, torsion resistance and pressure resistance. The torque of the hose hoop is balanced, the lock is firm, tight, and the adjustment range is large. The hose hoop is suitable for the fasteners connected with more than 30mm soft and hard pipes, and the appearance is beautiful after assembly.