Alleima is a market leader in stainless steel umbilical tubing. Since the mid-1990s, we have supplied more than 100 million meters (or 330 million feet) of umbilical tubes to all major fabricators and oil companies in all offshore regions. Our umbilical tubes are used in all offshore regions.
Coiled tubing for cost-effective umbilical manufacturing
Alleima offers orbital-welded coiled tubing for cost-effective umbilical manufacturing. Our umbilical tubes are also offered in straight lengths, as long as 40 meters (131 feet), for a minimum requirement of orbital welds.
Umbilical tube materials
| SAF™ 2507 (UNS S32750) |
|---|
| A super-duplex stainless steel that combines high corrosion resistance and high mechanical strength. With excellent resistance to seawater and marine environments, it is particularly well-suited for applications exposed to high stress in aggressive chloride-rich environments. The resistance to sour environments is superior to SAF™ 2205 (UNS S31803/S32205). PRE value min. 42.5 (valid for tube and pipe). Read more about SAF 2507® |
Size range
| Inner diameter | Wall thickness (mm) | ||
|---|---|---|---|
| in. | mm | min | max |
| 3/8 | 9.53 | 1.2 | 2 |
| 1/2 | 12.70 | 1 | 2.6 |
| 5/8 | 15.88 | 1 | 3 |
| 3/4 | 19.05 | 1.1 | 4 |
| 1 | 25.40 | 1.3 | 5 |
| 1¼ | 31.75 | 1.5 | 5 |
| 1½ | 38.10 | 2 | 5 |
| 1¾ | 44.45 | 2.5 | 5.5 1) |
| 2 |
50.80 | 2.7 | 6 1) |
1) Specific NDT acceptance criteria are applied for these dimensions
| Inner diameter | Wall thickness (mm) | ||
|---|---|---|---|
| in. | mm | min | max |
| 1¾ | 44.45 | 2.50 | 8.00 |
| 2 | 50.80 | 2.80 | 8.00 |
| 2¼ | 57.15 | 3.20 | 9.00 |
| 2½ | 63.50 | 3.50 | 8.00 |
| 2¾ | 69.85 | 4.00 | 8.00 |
| 3 | 76.20 | 4.30 | 10.00 |
| 3¼ | 82.55 | 4.60 | 8.00 |
| 3½ | 88.90 | 4.90 | 12.00 |
| 3¾ | 95.25 | 5.30 | 9.00 |
| 4 | 101.60 | 5.50 | 14.00 |
| 4½ | 114.30 | 6.30 | 16.00 |
| 5 | 127.00 | 7.00 | 18.00 |