... , embedded bullets, rust, mill scale, paraffin, perforation burrs . The Casing Scraper is used to clean cement, mud, embedded bullets, rust, mill ... cause these tools to become difficult to operation.The Casing Scraper is manufactured from a solid piece of heat treated ... body to completely scrape the casing surface without routing the tool.Standard coimcciioni on (he Casing Scraper are API Reg., Box ...