YY-JDG(DN50—1000) series polyurethane cup electronic paraffin scraperIt is made up of steel body, electronic launcher, polyurethane/rubber cup and steel scraper blades. Paraffin scraper blades are specially manufactured pursuant to different pipe wall thicknesses, capable of avoid damages to pipe internal wall and valves and fit for removing of condensed oil and coagulated paraffin. The replaceable cups and discs make special configurations easy and its low cost gives users the option to dispose of or rebuild the pig after hard use.