The hot rolled round sectioned steel bars inside the scope of this standard must be delivered according to the dimensions
shown on Figure 1 and Table 1. The preferred dimensions are given in Fig. 1.
Table 1 - Preferred dimensions and theoretical weights of hot rolled round steel bars for general purposes.
| Diameter d mm |
Deviation Limits Normal mm |
Deviation Limits Precise mm |
Weight per meter Kg/m |
Sectional Area Cm² |
| 16 | ±0,5 | 0,20 | 1,58 | 2,01 |
| 18 | ±0,5 | ±0,20 | 20,00 | 2,54 |
| 19 | ±0,5 | ±0,20 | 2,23 | 2,84 |
| 20 | ±0,5 | ±0,20 | 2,47 | 3,14 |
| 22 | ±0,5 | ±0,20 | 2,98 | 3,80 |
| 24 | ±0,5 | ±0,25 | 3,55 | 4,91 |
| 25 | ±0,5 | ±0,25 | 3,85 | 5,31 |
| 26 | ±0,6 | ±0,25 | 4,17 | 5,73 |
| 27 | ±0,6 | ±0,25 | 4,49 | 6,16 |
| 28 | ±0,6 | ±0,25 | 4,83 | 7,07 |
| 30 | ±0,6 | ±0,25 | 5,55 | 8,04 |
| 32 | ±0,6 | ±0,30 | 6,31 | 9,62 |
| 35 | ±0,6 | ±0,30 | 7,55 | 10,2 |
| 36 | ±0,6 | ±0,30 | 7,99 | 1,3 |
| 38 | ± | ±0,30 | 8,90 | 12,6 |
| 40 | ±0,8 | ±0,30 | 9,86 | 13,9 |
| 42 | ±0,8 | ±0,40 | 10,9 | 15,9 |
| 45 | ±0,8 | ±0,40 | 12,5 | 18,1 |
| 48 | ±0,8 | ±0,40 | 14,2 | 19,6 |
| 50 | ±0,8 | ±0,40 | 15,4 | 21,2 |
| 52 | ±1 | ±0,40 | 16,7 | 23,8 |
| 55 | ±1 | ±0,50 | 18,7 | 28,3 |
| 60 | ±1 | ±0,50 | 22,2 | 31,2 |
| 63 | ±1 | ±0,50 | 24,5 | 33,2 |
| 65 | ±1 | ±0,50 | 26,0 | 38,5 |
| 70 | ±1 | ±0,50 | 30,2 | 41,9 |
| 73 | ±1 | ±0,50 | 32,9 | 44,2 |
| 75 | ±1 | ±0,50 | 34,7 | 44,2 |
| 80 | ±1 | 39,5 | 50,3 | |
| 85 | ±1,3 | 44,5 | 56,7 | |
| 90 | ±1,3 | 49,9 | 63,6 | |
| 95 | ±1,3 | 55,6 | 70,9 | |
| 100 | ±1,3 | 61,7 | 78,5 | |
| 105 | ±1,5 | 68,0 | 86,6 | |
| 110 | ±1,5 | 74,6 | 95,0 | |
| 115 | ±1,5 | 81,5 | 104 | |
| 120 | ±1,5 | 88,8 | 113 | |
| 125 | ±1,5 | 96,3 | 123 | |
| 130 | ±2 | 104 | 133 |
Bars with diameter above 250 mm can be delivered with +/- 6,0 mm deviation limit. Deviation range can be accepted as plus tolerance upon agreement.
Density: 7,85 kg/dm³3
Figure1- Hot Rolled Round Steel Bar
DIMENSIONAL TOLERANCES
Diameter ( d )
The deviation from nominal diameter must be inside the tolerances given in Figure 1 and 2.
Note - In figure 1, there are two tolerance classes; normal and precise (P).
Roundness ( d )
The deviation from roundness must not exceed 75% of the tolerances givern in Fig. 1 and Fig. 2
Table 2 - Tolerances of hot rolled round steel bars. All sizes are in mm.
Table 3 - Tolerances on Length
| Uzunluk Tipi / Length Type | Aralık / Range mm | Sapma Sınırları / Deviation Limits |
| İmalat Boyu / Production Length M | Her sipariş kaleminde 2000'lik artışlarla 3000 - 13000 arası Between 3000 - 13000 with an increase of 2000 in each item |
Teslim edilen çubukların % 10'u sipariş aralığının asgari değeri altında olabilir, ancak asgari değerin % 75'inin altında olamaz. 10% of delivered bars may be below minimum length but this 10% may not be below 75% of minimum length. |
| Sabit Boy / Constant Length F | 3000 - 13000 | ± 100 mm |
| Tam boy / Full Length E | < 6000 ≥ 6000 ≤ 13000 |
± 25 mm ± 50 mm |
The customer must inform about the desired length, length type and length range.
Upon request, the production can be made with plus tolerance.
