The project describes the prototype of pipe line inspection robot by IoT that can detect various pipe cracks internally by using sensors and camera at very low cost. The economic value of pipe lines which are used in industry for various purposes is very large and pipe line inspection has become an important issue as replacement of defected pipe line is more costly as well as more complicated. Here the unique four wheeled chassis design using a combination of wireless sensor network and IoT to monitor and detect the faults in pipe lines. Using IoT technology, the proposed system eliminates the human efforts from inaccessible environment by acquiring useful information about cracks that exists in the pipe lines by transmitting the data wirelessly. The system acquires necessary data regarding detection of crack and status of water flow inside the pipe through wireless sensors internally and indicating flaws of the pipelines to the smart devices of using IoT for the connectivity of devices. Information received is used for further rectification of the pipeline. Wireless sensors-based systems are the new generation systems where these sensors are used to monitor the environment to detect any slight variations in any specified values.