| Pipe Products: |
| 1. AMERICAN STANDARD |
| 2. JAPANESE STANDARD |
| 3. BRITISH STANDARD |
| 4. CHINESE STANDARD |
| 5. GERMAN STANDARD |
Welded Tube
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Strip→Fiton→Tube-making→High Frequency Welding→Blowing Scar Fixing Size→Rectifying Straight→Cutting→Packang |
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