2. steel sheets for BRAUN TUBES Frame Inner Shield Band

3. steel sheets for BRAUN TUBES Cold Rolled Steel for Frame Characteristics High quality products by the computer integrated manufacturing system in Asan Bay Work Excellent surface finish, flatness, formability and thickness tolerance Superior hardness and tensile strength -The best combination of hardness and tensile strength has been achieved to provide the customers with the advantages of working without burring or powdering

4. steel sheets for BRAUN TUBES Application Frame

5. steel sheets for BRAUN TUBES Mechanical Properties ClassStandard SpecificationDongbu Commercial Quality T.S (kg/mm 2 ) EL min.(%) Hardness (HrB) T.S (kg/mm 2 ) EL min.(%) Hardness (HrB) 28 and over 36 ∼ 37 and over 65 and under 28 and over 36 ∼ 37 and over 55 and under ※ Please contact our representative regarding the range of coil weight & packing. ※ We can customized mechanical properties per demand.

6. steel sheets for BRAUN TUBES Characteristics Extra Thin Cold Rolled Steel for Inner Shield Very thin thickness : 0.15mm Excellent flatness and thickness tolerance Thickness(mm) Flatness(mm) Rolling DirectionCrosswise ±0.01 max.3

7. steel sheets for BRAUN TUBES Application Inner Shield

8. steel sheets for BRAUN TUBES Mechanical and Magnetic Properties-Dongbu Class Mechanical PropertiesMagnetic Properties T.S (kg/mm 2 ) EL (%) Permeability Coercive Force(Oe)  (0.35) Ordinary28≤≥30≥300≤2.5 Medium permeability25≤≥20≥500≤1.8 High permeability40≤≤10≥750≤1.25 ※ Note1 : Mechanical properties : As received 2 : Magnetic properties : After annealing(about 600 ℃ ×10minutes) ※ Please contact our representative if you have further question

9. steel sheets for BRAUN TUBES Characteristics ALCOT for Band Excellent heat resistance Al High temperature oxide film Alloy layer Fe Alloy layer Fe Alloy layer Fe Before heating Heating ※ Maintain surface attractiveness at extensive temperatures up to 500 ℃ ; the surface color changes slowly from grey to black at higher temperature. HEATING BEHAVIOR OF ALCOT

10. steel sheets for BRAUN TUBES Characteristics Available quality specification : Commercial, Drawing, and Structural - KSD 3544, JIS G 3314, ASTM A 463-96a, EN 10154 Higher corrosion resistance

11. steel sheets for BRAUN TUBES Application ※ ALCOT is d Dongbu Steel brand name for hot-dip aluminium coated steel sheets and coils.

12. steel sheets for BRAUN TUBES Scope Manufacturing Field ALCOT for Band ※ Skelp of any width can be manufactured upon demand. Thickness (mm) Width (mm) Coating Weight (g/m 2 ) Post-treatment 0.4 ∼ 2.3 min. 16 40 ∼ 160 Chromated, Oiled, No treatment

13. steel sheets for BRAUN TUBES Characteristics SuperGalum for Band [ Level of oxidation with continuous heating ] Excellent heat resistance ※ Extensive use at temperatures of around 315 ℃ or less causes very little change in ALCOT and does not affect its attractive surface brightness. ※ Maintain surface attractiveness at extensive temperatures up to 315 ℃ ; the surface color changes slowly from grey to black at higher temperature. [ Heat resistance]

14. steel sheets for BRAUN TUBES Characteristics SuperGalum for Band Excellent formability and durability Economic advantages -SuperGalum sheet provides more additional area per ton than galvanized steel sheet. Excellent flatness and thickness tolerance Thickness(mm)Flatness(mm) ±0.03max.3

15. steel sheets for BRAUN TUBES Application SuperGalum for Band ※ SuperGalum is a Dongbu Steel brand name for 55% Aluminium-Zinc alloy coated steel sheets and coils. Brand

16. steel sheets for BRAUN TUBES Scope of Manufacturing Field SuperGalum for Band ※ Post-treatment : Chromated, Oiled, No treatment, Chromated & Oiled Thickness (mm) Width (mm) Coating Weight (g/m 2 ) Optimal Coating Weight for BAND (g/m 2 ) 0.3 ∼ 2.0 min.16 60 ∼ 20090 ∼ 130