double-stranded scraper conveyo is widely used in building materials, mining, metallurgy, chemical KS¢ó model and GS model double-stranded scraper conveyo is widely used in building materials, mining, metallurgy, chemical industry and other departments. 1.KS:300¡¢400¡¢5002.LB:300¡¢400¡¢500 Double-stranded scraper conveyor