| Variety | Grade | state | shape | Specification (mm) | use | Executive standard | 
| Shaped tube series | T2 |       Circumference: 480mm or less       Customize according to the picture  |            Conduit       aviation industry Cooling flat tube Plumbing decoration  |      GB/T 1527-2017 | ||
| H62 | ||||||
| H63 | ||||||
| H65 | ||||||
| H68 | ||||||


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