Barras com seção transversal retangular produzidas com aço de baixo teor de carbono, de acordo com a norma ASTM A36. Outros exemplos de normas: SAE 1035/45/70, A588. Empregadas principalmente em grades e portões, esquadrias, máquinas, implementos agrícolas e rodoviários e na indústria mecânica em geral.
| Bitola | Largura (pol) | Espessura (pol) | Largura (mm) | Espessura (mm) | Peso Linear (kg/m) | Qualidade |
| 3/8 x 1/8 | 3/8 | 1/8 | 9,53 | 3,18 | 0,24 | A 36 |
| 1/2 x 2,50 | 1/2 | - | 12,70 | 2,50 | 0,24 | - |
| 1/2 x 1/8 | 1/2 | 1/8 | 12,70 | 3,18 | 0,32 | - |
| 1/2 x 3/16 | 1/2 | 3/16 | 12,70 | 4,76 | 0,48 | - |
| 1/2 x 1/4 | 1/2 | 1/4 | 12,70 | 6,35 | 0,59 | - |
| 5/8 x 2,50 | 5/8 | - | 15,88 | 2,50 | 0,31 | - |
| 5/8 x 1/8 | 5/8 | 1/8 | 15,88 | 3,18 | 0,40 | - |
| 5/8 x 3/16 | 5/8 | 3/16 | 15,88 | 4,76 | 0,59 | - |
| 5/8 x 1/4 | 5/8 | 1/4 | 15,88 | 6,35 | 0,74 | - |
| 3/4 x 1/8 | 3/4 | 1/8 | 19,05 | 3,18 | 0,48 | - |
| 3/4 x 3/16 | 3/4 | 3/16 | 19,05 | 4,76 | 0,59 | - |
| 3/4 x 1/4 | 3/4 | 1/4 | 19,05 | 6,35 | 0,74 | - |
| 7/8 x 1/8 | 7/8 | 1/8 | 22,23 | 3,18 | 0,56 | - |
| 7/8 x 3/16 | 7/8 | 3/16 | 22,23 | 4,76 | 0,83 | - |
| 7/8 x 1/4 | 7/8 | 1/4 | 22,23 | 6,35 | 0,95 | - |
| 7/8 x 1/2 | 7/8 | 1/2 | 22,23 | 12,70 | 2,22 | - |
| 1 x 1/8 | 1 | 1/8 | 25,40 | 3,18 | 0,63 | - |
| 1 x 3/16 | 1 | 3/16 | 25,40 | 4,76 | 0,95 | - |
| 1 x 1/4 | 1 | 1/4 | 25,40 | 6,35 | 1,27 | - |
| 1 x 5/16 | 1 | 5/16 | 25,40 | 7,94 | 1,58 | - |
| 1 x 3/8 | 1 | 3/8 | 25,40 | 9,53 | 1,90 | - |
| 1.1/4 x 1/8 | 1.1/4 | 1/8 | 31,75 | 3,18 | 0,72 | - |
| 1.1/4 x 3/16 | 1.1/4 | 3/16 | 31,75 | 4,76 | 1,19 | - |
| 1.1/4 x 1/4 | 1.1/4 | 1/4 | 31,75 | 6,35 | 1,58 | - |
| 1.1/4 x 5/16 | 1.1/4 | 5/16 | 31,75 | 7,94 | 1,98 | - |
| 1.1/4 x 3/8 | 1.1/4 | 3/8 | 31,75 | 9,53 | 2,38 | - |
| 1.1/4 x 1/2 | 1.1/4 | 1/2 | 31,75 | 12,70 | 3,17 | - |
| 1.1/2 x 1/8 | 1.1/2 | 1/8 | 38,10 | 3,18 | 0,87 | - |
| 1.1/2 x 3/16 | 1.1/2 | 3/16 | 38,10 | 4,76 | 1,42 | - |
| 1.1/2 x 1/4 | 1.1/2 | 1/4 | 38.10 | 6,35 | 1,90 | - |
| 1.1/2 x 5/16 | 1.1/2 | 5/16 | 38,10 | 7,94 | 2,38 | - |
| 1.1/2 x 3/8 | 1.1/2 | 3/8 | 38,10 | 9,53 | 2,85 | - |
| 1.1/2 x 1/2 | 1.1/2 | 1/2 | 38,10 | 12,70 | 3,80 | - |
| 1.1/2 x 5/8 | 1.1/2 | 5/8 | 38,10 | 15,88 | 4,75 | - |
| 1.3/4 x 5/8 | 1.3/4 | 5/8 | 44,45 | 15,88 | 5,39 | - |
| 2 x 1/8 | 2 | 1/8 | 50,80 | 3,18 | 1,27 | - |
| 2 x 3/16 | 2 | 3/16 | 50,80 | 4,76 | 1,90 | - |
| 2 x 1/4 | 2 | 1/4 | 50,80 | 6,35 | 2,53 | - |
| 2 x 5/16 | 2 | 5/16 | 50,80 | 7,94 | 3,17 | - |
| 2 x 3/8 | 2 | 3/8 | 50,80 | 9,53 | 3,80 | - |
| 2 x 1/2 | 2 | 1/2 | 50,80 | 12,70 | 5,06 | - |
| 2 x 5/8 | 2 | 5/8 | 50,80 | 15,88 | 6,33 | - |
| 2 x 3/4 | 2 | 11/16 | 50,80 | 17,46 | 7,60 | - |
| 2.1/2 x 1/4 | 2.1/2 | 1/4 | 63,50 | 6,35 | 3,17 | - |
| 2.1/2 x 5/16 | 2.1/2 | 5/16 | 63,50 | 7,94 | 3,96 | - |
| 2.1/2 x 3/8 | 2.1/2 | 3/8 | 63,50 | 9,53 | 4,75 | - |
| 2.1/2 x 1/2 | 2.1/2 | 1/2 | 63,50 | 12,70 | 6,33 | - |
| 2.1/2 x 5/8 | 2.1/2 | 5/8 | 63,50 | 15,88 | 7,92 | - |
| 2.1/2 x 3/4 | 2.1/2 | 3/4 | 63,50 | 19,05 | 9,50 | - |
| 2.1/2 x 7/8 | 2.1/2 | 7/8 | 63,50 | 22,23 | 10,87 | - |
| 2.1/2 x 1 | 2.1/2 | 1 | 63,50 | 25,40 | 12,66 | - |
| 3 x 1/4 | 3 | 1/4 | 76,20 | 6,35 | 3,80 | - |
| 3 x 5/16 | 3 | 5/16 | 76,20 | 7,94 | 4,75 | - |
| 3 x 3/8 | 3 | 3/8 | 76,20 | 9,53 | 5,70 | - |
| 3 x 1/2 | 3 | 1/2 | 76,20 | 12,70 | 7,60 | - |
| 3 x 5/8 | 3 | 5/8 | 76,20 | 15,88 | 9,50 | - |
| 3 x 3/4 | 3 | 3/4 | 76,20 | 19,05 | 11,40 | - |
| 3 x 1 | 3 | 1 | 76,20 | 25,40 | 15,19 | - |
| 3.1/2 x 5/8 | 3.1/2 | 5/8 | 88,90 | 15,88 | 10,84 | - |
| 3.1/2 x 11/16 | 3.1/2 | 11/16 | 88,90 | 17,46 | 11,94 | - |
| 3.1/2 x 3/4 | 3.1/2 | 3/4 | 88,90 | 19,05 | 13,05 | - |
| 3.1/2 x 1 | 3.1/2 | 1 | 88,90 | 25,40 | 20,26 | - |
| 4 x 1/4 | 4 | 1/4 | 101,60 | 6,35 | 5,07 | - |
| 4 x 5/16 | 4 | 5/16 | 101,60 | 7,94 | 6,33 | - |
| 4 x 3/8 | 4 | 3/8 | 101,60 | 9,53 | 7,60 | - |
| 4 x 1/2 | 4 | 1/2 | 101,60 | 12,70 | 10,13 | - |
| 4 x 5/8 | 4 | 5/8 | 101,60 | 15,88 | 12,67 | - |
| 4 x 3/4 | 4 | 3/4 | 101,60 | 19,05 | 15,19 | - |
| 4 x 1 | 4 | 1 | 101,60 | 25,40 | 25,30 | - |
| 5 x 1/4 | 5 | 1/4 | 127,00 | 6,35 | 6,30 | - |
| 5 x 5/16 | 5 | 5/16 | 127,00 | 7,94 | 7,90 | - |
| 5 x 1 | 5 | 1 | 127,00 | 25,40 | 30,40 | - |
| 6 x 1/4 | 6 | 1/4 | 152,40 | 6,35 | 7,60 | - |
| 6 x 5/16 | 6 | 5/16 | 152,40 | 7,94 | 9,50 | - |
| 6 x 3/8 | 6 | 3/8 | 152,40 | 9,53 | 11,40 | - |
| 6 x 1/2 | 6 | 1/2 | 152,40 | 12,70 | 15,20 | - |
| 6 x 5/8 | 6 | 5/8 | 152,40 | 15,88 | 19,00 | - |
| 6 x 3/4 | 6 | 3/4 | 152,40 | 19,05 | 22,80 | - |