... Variable frequency motor Suspension roller typeXG series suspension roller concrete pipe making machine adopted the new structure of two points ... structure, good stability, convenient operation, high yield.Our concrete pipe making machine adopts variable frequency motor,which can help ... -5000mm3,Batching Hopper,we have PLD800/1200/1600/2400/3000/4000 etc 4,JS500 Concrete mixer,we also produce JS750, ...