concrete pump reducer pipe have different size of both end to connect different size concrete pump pipe, it is a very important part of concrete pump pipeline. We can produce the reducer accoding to customer needs. The concrete pump reducer pipe is the diameter of the inlet and outlet is not the same, one big, one small, because it is connected with the outside, the interface is not the same, so to reduce the diameter, it is called the variable diameter pipe. 1. Variable diameter, the pulse phenomenon will be