槽型辊,槽型胶辊广泛用于冶金、建筑、煤矿等行业，具有耐磨、耐压、抗老化等优点。（机器开槽、尺寸准确）Grooved rollers (electric cylinder)Widely used in metallurgical industry,architecture and coal mining.High quality of wear resitsting,pressar resisting and ageling resisting.(mechanicall grooved and exactly measured.)