Aluminium space tubes for insulated glass Laser Welded Material: A3003 aluminum strip SIZE:6A,9A,12A,15A,16A,18A,20A,24A,29A Aluminium space tubes for insulated glass,hollow glass SIZE:6A,9A,12A,15A,16A,18A,20A,24A,29ASurface process :Mill finished, AnodizingPackage:Carton Box package or wooden casesProvide OEM product.Material: AA3003 aluminum strip