This machine has been designed and manufactured by Perlite to remove the rust and to clean the inner wall of the steel pipes of 40" to 68" which are to be lined later with a coating of cement by the cement lining machine.
The machine was designed and manufactured to remove rust from the internal wall. This machine replaced previously manual rust removal practice by sand blasting which was slower and less safe or hygienic.
Rust is removed by three brushes that have rotational and longitudinal movements inside the pipes of various diameters. The centrifugal force that results from fast rotation of arms causes effective contacts of brushes with the internal surface of the pipes. The dust material is automatically transported out of the pipe resulting in a highly efficient dust removal operation.