The scraper pig produced by Shenyang Wensheng Equipment Co.,Ltd is mainly used for purging of long-transportation, paraffin removal on the surface in the pipeline, descaling in the coal gas pipeline and so on. It is also widely used in the industries of such as coal gas and natural gas, and has the characteristics of simple structure and better clean result. Superiorities of scraper pig: The scraper pig has various superiorities of simple use, low cost, large amount of deformation and strong pass ability. The locator transmitters with high capability can help quickly find out the crushing position. This pig will increase pressure to break the block if there is stifled situation. The stiff bubble type can be used to clear hard scale.