Hume pipe
A hume pipe is a concrete tube with reinforced bar. It was invented by the Hume brothers in Australia in 1910. A hume pipe is formed by pouring concrete into a formwork, and axially rotating it, and allowing it to compact using centrifugal force. A hume pipe can withstand internal and external pressure well, and is primarily used for sewer pipes, agricultural waterways, and residential construction. Anti-bacterial concrete is commonly used in hume pipes.