Building machine is used for pressing the new tread on the surface of old tire and aim to tread stick on the tire surface closely. 1.Expansion hoop automatic inflating, efficient alignment. 2.Independent tyre pressure roller, improve the efficiency of the exhaust. 3.Double speed control,realize dynamic rotation by foot switch 4.it can hang the cushion gum and cut the tread. 5.its size is 1300*1000*1800mm and its weight is 500KG, 6.it is suitable the standard wheel rim diameter is :15"-22.5",the standard tire outer diamater is 500-1250mm,the voltage is AC380V/50HZ,the power is 2.5KW,the average pressing tire time is 5 minutes.