... bandInside diameter of coil:508mmNote: 1,Nominal thickness of steel band is the thickness without coating.2, We can ... improving day by day, it is not only well used in steel producing area, it is also accepted by car producer ... wall, water conduit, balcony, booth, roller shutterindoordoor, door case, steel building- structure, folding screen, ceiling, elevator, corridor, air chuteElectric ...