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Longitudinally welded circular hollow sections
- material: the tubes are made of hot rolled coil
- steel grades: S235JR and S275JR according to EN 10025 (at the customers' requests, other qualities as JRG, JO, etc. could be employed)
- producing and tolerances according to STAS 7657/1990 and EN 10219-2/2006
- length: 6000 mm usually (at the customers' requests the tubes can be produced at up to 12000 mm length or fixed lengths multiple
| Size |
Thickness (mm) |
| (mm) |
1.5 |
2 |
2.5 |
3 |
3.5 |
4 |
5 |
6 |
| 19 |
|
|
|
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|
| 21.3 |
|
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|
| 25 |
|
|
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| 27 |
|
|
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|
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| 30 |
|
|
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| 33.7 |
|
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|
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|
|
| 40 |
|
|
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|
| 41.5 |
|
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| 48 |
|
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| 56 |
|
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| 60.3 |
|
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| 76 |
|
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|
|
|
| 89 |
|
|
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|
|
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| 102 |
|
|
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| 108 |
|
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| 114 |
|
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| 127 |
|
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| 152 |
|
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| 159 |
|
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INTFOR SA also produces special shaped tubes as 'Z' , 'T' and 'L' type made of hot rolled coil, S235JR steel grade (usually):
Z : 47x25x15x1,5(2,0) mm
T : 120x65x55x2,0 mm
T : 55x47x25x15x1,5(2,0) mm
L : 47x40x25x2,0 mm
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