In addition to hot rolling and cold drawing processes, our company also imports several kinds of products with the aim of answering customer inquiries in a wider way. The main products which are imported are as below:
SEAMLESS STEEL TUBES (EN 10297-1)
The amount of seamless steel tubes produced in Turkey is insufficient to supply the amount needed in the market and this is why this material type needs to be imported. Our seamless steel tube import is carried out from several mills which are well known by the global pipe market.
Table 1 - Tolerances on outside diameter and on wall thickness
Tolerances on outside diameter (D) and wall thickness (T)
The outside diameter and wall thickness of the tubes shall be within the tolerance limits given in Table 1. Out of roundness is included in the tolerances on outside diameter and eccentricity is included in the tolerances on thickness.
| Dış Çap / Outside diameter D mm |
| D ≤ 219,1 |
| D ≤ 219,1 |
| Dış Çap Toleransları / Tolerances on D |
||
| ± 1 % veya / or ± 0,5 mm Hangisi daha büyükse / Whichever is the greater |
||
| ± 1 % | ||
| Et kalınlığı toleransları ( T/D oranı üzerinden ) / Tolerances on T for a T/D ratio |
||
| ≤ 0,025 | > 0,025 ≤0,050 |
>0,050 |
| ± 12,5 % veya / or ±0,4 mm Hangisi daha büyükse / Whichever is the greater |
||
| ± 20% | ± 15% | ± 12,5% |
Table 2 - Preferred dimensions of seamless steel tubes
| D Outside diameter |
| 26,9 |
| 33,7 |
| 35 |
| 38 |
| 40 |
| 42,4 |
| 44,5 |
| 48,3 |
| 51 |
| 54 |
| 57 |
| 60,3 |
| 63,5 |
| 70 |
| 73 |
| 76,1 |
| 82,5 |
| 88,9 |
| 101,6 |
| 108 |
| 114,3 |
| 121 |
| 127 |
| 133 |
| 139,7 |
| 141,3 |
| 152,4 |
| 159 |
| 168,3 |
| 177,8 |
| 193,7 |
| 203 |
| 219,1 |
| 229 |
| 244,5 |
| 273 |
| 298,5 |
| 323,9 |
| 355,6 |
| 368 |
| 406,4 |
| 419 |
| 457 |
| 508 |
| 521 |
| 559 |
| 610 |
| T Wall thickness | ||||||||||||||||||||||||||||||||||||
| 2,3 | 2,6 | 2,9 | 3,2 | 3,6 | 4 | 4,5 | 5 | 5,4 | 5,6 | 6,3 | 7,1 | 8 | 8,8 | 10 | 11 | 12,5 | 14,2 | 16 | 17,5 | 20 | 22,2 | 25 | 28 | 30 | 32 | 36 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 80 | ||
