Characteristics: various functions, high efficiency, top-grade quality, large size turntable is revolving door structure, the 8 clapboards has formed 8 working positions, each of which possesses one set of clamps. 8 pores are inserted. Making use of high speed impeller, pills can be impacted onto workpieces, excellent cleaning can be carried out within 8 to 10 minutes. Inside casing is made of wearable steel plates which has long service life, fit for gear wheel, gear shaft, spring, tie bar, as well as parts that are damageable in auto, watercraft manufacture, mien and aviation industry.