Stainless steel tube for heating elements Material:304, 321, 316L,309S,310S,840,800,825,600 Usage: heater, heat exchanger, condenser and other industrial used tube. Diameter: 7.1, 7.3, 7.5, 7.8, 8.0, 8.5, 9.3, 9.5, 10, 10.5, 12, 12.7, 13.8, 16, 18, 19mm;Thickness: 0.4-1.0mmTolerence: length: +-5mm; thickness:+-0.05mm; Diameter:+-0.1mm Stainless steel tube for heating elements