1.1The machine has full-automatic and manual functions, equipped with 3 automatically guns and 1 manual gun, 1.2 The nozzles of guns are made of special material which can increase using life. مشخصات فنی. 2.Technical parameter. The sandblasting speed is 12~15m2/h. The min.processing size:300*300mm. The max.processing size:1500*3000mm.