The process using spin-moulding machine was originally invented by Australia and petented as "ROCLA". The concrete pipe made by this method can be of any size and yeild more accurate dimensions and achieve relativeily more concrete compaction. The entire machinery being easily can be installed at any place quite conveniently, whether it is a permanent factory primises or some temporary site in this field. This Process has been used with tremendous success in japan, Europe and Africa popularising a world-over owning to its uniqueness simplicity.