The products include wear resistant rubber linings of the overflow, grate multi-house ball mills, and can meet the requirements for primary coarse grinding, and second fine grinding or even more fine grinding. The grinding mill diameter is from Φ 900~Φ 5500mm(unlimited length), and the biggest specification of ball mill is from Φ 5500× 8850mm. The application fields include black metal mines, nonferrous mines, chemical mines, gold mines, and as well as the steel and iron smelting, non-ferrous metal smelting, fertilizer, wet cement, and sintering mixture industries etc.