Diameter of pre-heater roller:φ600mm,φ800mm, φ900mm,φ1000mm,φ1100mm available discretionarily.Expiry width: 1400mm-2500mmElectromotion adjust the dimension of per-heater. And the range of adjustment: 60-220°Each roller surface are treated with exactitude milling and plating rigid chrome,glabrous and durable.Adopt butterfly seal or plat design. Insure reel paper is heated averagely.Can be collocated in monolayer or multiple.