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Bending Galvanized Rebar
prior to Galvanizing
 Hot-dip galvanized reinforcing steel can either be bent prior to
galvanizing or after the galvanized coating has been applied. When
bending prior to galvanizing, it is
recommended that the bend radii be as large as
possible in order to avoid accelerated aging
of the steel by cold working. In the United States specification,
ASTM A 767, there is a table that gives guidelines
for the recommended bend diameter based on the bar
size:
| Bar No. |
Grade 300 [40] |
Grade 350 [50] |
Grade 420 [60] |
Grade 520 [75] |
| 10, 13, 16 [3, 4, 5] |
6dA |
6d |
6d |
... |
| 19 [6] |
6d |
6d |
6d |
6d |
| 22, 25 [7, 8] |
6d |
8d |
8d |
8d |
| 29, 32 [9, 10] |
... |
... |
8d |
8d |
| 36 [11] |
... |
... |
8d |
8d |
| 43, 57 [14, 18] |
... |
... |
10d |
10d |
| Ad = nominal diameter of bar |
 Bond
Strength
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