... (mm) Material NH38 381.0, 1.2, 1.5 300-1600 12 carbon steel,stainless steel,pvc NH50 50 1.2, 1.5 300-1600 12 carbon ... easy mounting. Or in fixed shaft type.4. GCS non-drive gravity roller could be made of nylon, weld pipe, stainless ... roller, pvc roller, sprocket roller, retractable roller, taper roller, drive roller, non-drive roller. All these roller used in bulk material handling ...