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Tubes for raiser
Technical data on tubes for risers
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Chemical composition |
6Al-4V |
3,2Al-2,7V-1,3Mo-1Zr |
3Al-2,5V |
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3,2Al-2,7V-1,3Mo-1Zr |
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Metod of manufacture |
Hot-rolled |
Cold-rolled |
Cold-rolled |
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Surface condition |
Machined |
Pickling |
Pickling |
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Ra2,5-3,2 |
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Outer Diameter |
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mm |
219-508 |
88,9-355 |
88,9-355 |
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inch |
11 - 18 |
3,5-14 |
3,5-14 |
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Wall thicknness |
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mm |
13-102 |
3,2-25,4 |
3,2-25,4 |
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inch |
1/2 - 4 |
1/8 - 1 |
1/8 - 1 |
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Limit diameter deviatation |
± 0,8% |
± 0,8% |
± 0,8% |
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Limit wall thicknness deviatation |
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ordinary accuracy - |
± 12,5% |
± 12,5% |
± 12,5% |
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increased accuracy - |
± 10,0% |
± 10,0% |
± 10,0% |
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Tube length |
up to 8000 mm |
up to 11000 mm |
up to11000mm |
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Mechanical properties |
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σB, МПа/ KSi |
min. 895/130 |
min. 720/104 |
min. 620/90 |
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σ0,2, МПа/ KSi |
min. 825/119 |
min. 630/91 |
min. 485/70 |
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δ, % |
min. 7,0 |
min. 15 |
min. 15 |
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Ψ, % |
min. 20 |
min. 30 |
min. 25 | Notes:
1. Palladium or ruthenium can be introduced into the alloy as agreed with customer.
2. Wall thickness, tube diameter shall be agreed with the customer.
Tubes are delivered as heat-treated, subject to hydrostatic and ultrasonic testing. 
Tubes for riser
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