Roll Body: adopt HT-300 cast iron to cast inside and outside; thickness: 120mm; the thickness of the finished product wall is 100mm Cylinder Head: adopt ZG270-500 cast iron to cast and temper. shaft diameter lathe:1:12 use hydraulic pressure To produce finished products according to drawings after the whole body is hot charged and bolt fastening by 8.8 grade M30×140 hexagonal head bolt Roll body dynamic balance: accuracy grade G2.5.speed of dynamic balance is 300 m/min (add mass method) Thickness: unilateral thickness: 20-22.5mm The type of rubber surface:ZT--PPS 2 Hardness: “A”95℃±2℃ The performance of rubber surface: high friction coefficient, chemical resistance,, good abrasion resistance, medium temperature 80,acid and alkali resistant Blind bore on roll surface; bore diameter: 3mm; bore depth: 7-9mm; A double helix arrangement; aperture ratio: 22-24%. ZHONGTIAN RUBBER ROLL MANUFACTURING CO., LTD.(All kinds of rollers for papermaking machine) Mobile:0086-13393887531 Manager:Yang Skype:ztjgcn@163.com Email:ztjgcn@163.com Add: 15 Huaifu road ,Qinyang City, Henan Province, China