Shandong Tongxin Aluminium Industry Co.
Shandong Tongxin Aluminium Industry Co.,Ltd.
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Aluminum Tube Welding 4343/3003/7072-Shandong Tongxin
| 1. Material | ||||||||||||||
| No. | Classificaiton | Layer | Alloy Number | Cladding Ratio | ||||||||||
| 1.1 | Non-cladding | Core | AA3003 | - | ||||||||||
| 1.2 | Cladding | Outer cladding | AA4343 | 8%-12% | ||||||||||
| Core | AA3003 | - | ||||||||||||
| Inner cladding | AA7072 | 8%-12% | ||||||||||||
| 2. Product size and tolerance | ||||||||||||||
| No. | Specification | Size | Tolerance | |||||||||||
| 2.1 | Width (mm) | 16/18/22/26/32/40,etc. | within ±0.08 | |||||||||||
| 2.2 | Height (mm) | 1.5/2.0,etc. | ±0.06 | |||||||||||
| 2.3 | Wall Thickness (mm) | 0.28 to 0.35 | ±0.015 | |||||||||||
| 3. Chemical composition for alloys | ||||||||||||||
| No. | AA number | Chemical Composition (%) | ||||||||||||
| Si | Fe | Cu | Mn | Mg | Zn | Ti | Zr | Bi | Others | Al | ||||
| Each | Total | |||||||||||||
| 3.1 | 3003 | 0.6 | 0.7 | 0.05-0.2 | 1-1.5 | 0.05 | 0.1 | 0.05 | 0.15 | RE | ||||
| 3.2 | 4343 | 6.8-8.2 | 0.8 | 0.25 | 0.1 | 0.05 | 0.2 | 0.05 | 0.15 | RE | ||||
| 3.2 | 7072 | 0.7 | 0.1 | 0.1 | 0.1 | 0.1 | 0.8-1.3 | 0.05 | 0.15 | RE | ||||
| 4. Mechanical properties | ||||||||||||||
| No. | Alloy number | Temper | Yield Strength Rp0.2(Mpa). Min | Tensile Strength Rm (Mpa) | Elongation (%) A50,Min | Typical usage | ||||||||
| 4.1 | 3003 | O | 35 | 95-135 | 10 | Auto. Heat exchanger welded tube | ||||||||
| 4.2 | 3003 | H12 | 90 | 120-175 | 0.5 | Auto. Heat exchanger welded tube | ||||||||
| 4.3 | 3003 | H14 | 125 | 145-200 | 0.5 | Auto. Heat exchanger welded tube | ||||||||
| 4.4 | 3003 | H24 | 125 | 145-205 | 6 | Auto. Heat exchanger welded tube | ||||||||
| 4.5 | 4343 | O | 35 | 95-150 | 8 | Auto. Heat exchanger welded tube | ||||||||
| 4.6 | 4343 | H14 | 120 | 140-200 | 0.5 | Auto. Heat exchanger welded tube | ||||||||
| 5. Surface finish and other properties | ||||||||||||||
| No. | Item | Description | ||||||||||||
| 5.1 | Surface finish | a. shall be free from pinholes and tearing; b. shall be free from waves and buckles; c. shall be bright,clear from dirts | ||||||||||||
| 5.2 | Depth of Curvature | In any length of 1 meter of the material,the depth of arc shall not exceed 2mm | ||||||||||||
| 6. Packing,Shipping and others | ||||||||||||||
| No. | Item | Description | ||||||||||||
| 6.1 | Packing | To be packed in wooden crate with polythene cover for water protection | ||||||||||||
| 6.2 | Marking | Each box to be legibly marked with the name of the manufacturer or supplier, the alloy designation of material,condition,dimensions and weight | ||||||||||||
| 6.3 | Shipping tools | Ship goods by van to departune port then by sea to desitination port | ||||||||||||
| 6.4 | Quantity variation | ±10% variation with order quantity shall be acceptable | ||||||||||||
| 7.Quality management and spot management | ||||||||||||||
| No. | Item | Description | ||||||||||||
| 7.1 | Quality control | 1. Quality assurance a. Incoming material quality assurance; b. Process quality assurance; c. First sample quality assurance; d. Final quality assurance. 2. Process management-The right results are from the right process a. Production process card control; b. Standard operational procedure;c.Job certification;d. Quality chart monitor. 3. Equipment and facility management a. Periodic maintenance; b.Preventative maintenance. 4. Mold management a. Mold life management; b.Periodic and preventative maintenance; c. Periodic inspection. | ||||||||||||
| 7.2 | Inspection Tools | Altimeter,Vernier caliper,Micrometer,3D coordinate measuring instrument | ||||||||||||
| 7.3 | Spot management | "5S" management (sort,set in order,shine,standard,sustainable). | ||||||||||||
We can gurantee product quality and offer very good service, another, our have many years experience of coating and export. If your have any question in the future time, your can freely contact us!
Contact Person: Manager Cong
Tel.:+86-531-83107167
Fax.+86-531-87868867
Mobile: 86-13355318076
Skype: tongxinaluminum