A449 Types
TYPE 1 | Plain carbon steel, carbon boron steel, alloy steel, or alloy boron steel. |
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TYPE 2 | Withdrawn 2003 |
TYPE 3 | Weathering steel. |
TYPE 1 | Plain carbon steel, carbon boron steel, alloy steel, or alloy boron steel. |
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TYPE 2 | Withdrawn 2003 |
TYPE 3 | Weathering steel. |