string bucket funnel

The string cylinder refers to a kind of cylinder set up in order to prevent the concrete from segregating during the vertical conveying of concrete, and the concrete slides down through it. The function of the stringer is the same as that of the duct and the chute. It is set up for conveying concrete. Generally, the stringer is directly connected to the conveying pipe of the pump truck on the construction site. Segregation will occur when the free fall height of concrete exceeds 2 meters, so the concrete pouring for pile foundations exceeding 2 meters must be transported by conduits, strings or chutes. In the construction process of some projects, there are strict requirements for the upper and lower diameters of the tandem cylinder.