... HBT60-13-90S Advantage:reliable working,stable switching,high efficiency , made in china HBT60-13-90S pipe valve concrete pump is ... system is designed as open-type,with features of reliable working,stable switching,high efficiency,easy maintemance,and low expenses ... of electrical system,and PLC for control system,with reliable working,strong adaptability,and wired remote comtrol.Cooling method adopts ...