... . Max. placing radius: 38.8m; 2. Rotary speed: 1450rpm Ship mounted Concrete Placing Booms: HGC38Main Features: The structure of boom ... assembly welding, the vertical column is of high interchangeability; With the proportional control technology applied in multi-valve, the change ... boom includes floor type, elevator shaft type, wall type, ship mounted type and tower type; The embedded parts can be ...