Each roller frame in the pipe section adopts a convenient adjustment structure, which is compact and easy to adjust; The connection with the roller is fastened with bolts to reduce noise caused by vibration. Using the excellent standard head and tail transition steel structure manufactured by many circular tube conveyor manufacturers in Germany and abroad, only one inlet and one outlet are left, truly achieving environmental protection. Stretching switches are basically required along the circular tube belt conveyor, and lighting is also required if necessary. In special circumstances, power cables need to be installed.