Pipes in the wheat flour milling system

Pipes is also an important parts in the whole flour milling system. It is like the road for the materials. And privde airtight space .the conveying efficence and effect is good to use the pipes.so, now in the grain processing industry, it is widly used.
 
there are 2 kinds of pipes. One is made by iron plate. Engineers will make the pipes from the iron plate when installation.the other is precast pipes. The pipes are made in advance along with other machines.ourside the precasted pipes, there is coating.
It looks nice,and the life is longer.but the cost is much higher.

                                   precast pipes  


                                      
                                 iron plate pipes