As is well known, buried steel pipe usually adopt multi-layer anti- corrosion polymer materials to protect pipes. So if we need to repair the pipe or add new branch for some reason, we must clear tyhe anti-corrosion layer completely. The tranditional method is to burn off the layer with blowtorch or scrape off it with a blade. However this way can lead to security incidents easily. The coasting removal device is specially designed for removal the coatings thoroughly and is concenient and security to use.