The Challenge
Within the expansion of a French gravel works several Hamco corrugated steel pipes were used as conveyor belt tunnels.
The first circular profile is a conveyor belt tunnel with three conical funnels, the second and third circular profile fit together with help of a T-junction made of prefabricated steel parts.
The second one is 40 m long with two conical funnels and the third one is 100 m long with six conical funnels. Each of these two last mentioned tunnels have cut ends.
