| After-sales Service: | 1 Year |
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| Warranty: | 1year |
| Bar Material: | ASTM 5140 or ASTM 1045 Steel, Round Corner 5mm Rad |
| Helix Plate Material: | ASTM A36 Hot Rolled Plate |
| Helix Thickness: | 3/8" and 1/2" |
| Corrosion Protection: | ASTM A123 Standard for Hot-Dipped Galvanized |
| Samples: |
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| Customization: |
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