Chain Driven Scraper provides an effective and economical skimming of oils from wastewater in scale pits, oily waste sumps of refineries, petrochemical plants and metal working units. It is mainly consisting of repeatedly skimming multi-scrapers in straight form driven by endless chains at both ends of the scrapers working between drive and idler sprockets. ASTiM Chain Driven Scrapers “ZNC” are also used for API separators.