| Diameter (mm) | Nominal linear mass (Kg/m) | ASTM A615 Tolerance | BS 4449:1997 | BS 4449:2005 | GCC Standard | No. of 12m bars in 2T bundle |
|---|---|---|---|---|---|---|
| 10 | 0.617 | -6% | ±6.5% | ±4.5% | ±6% | 270 |
| 12 | 0.888 | -6% | ±4.5% | ±4.5% | ±6% | 188 |
| 14 | 1.210 | -6% | ±4.5% | ±4.5% | ±5% | 138 |
| 16 | 1.580 | -6% | ±4.5% | ±4.5% | ±5% | 105 |
| 18 | 2.000 | -6% | ±4.5% | ±4.5% | ±5% | 84 |
| 20 | 2.470 | -6% | ±4.5% | ±4.5% | ±5% | 68 |
| 22 | 2.980 | -6% | ±4.5% | ±4.5% | ±4% | 56 |
| 25 | 3.850 | -6% | ±4.5% | ±4.5% | ±4% | 44 |
| 28 | 4.830 | -6% | ±4.5% | ±4.5% | ±4% | 34 |
| 32 | 6.310 | -6% | ±4.5% | ±4.5% | ±4% | 26 |
| 36 | 7.990 | -6% | ±4.5% | ±4.5% | ±4% | 21 |
| 40 | 9.870 | -6% | ±4.5% | ±4.5% | ±4% | 17 |