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Tubes for raiser

Technical data on tubes for risers

Chemical composition

6Al-4V

3,2Al-2,7V-1,3Mo-1Zr

3Al-2,5V

3,2Al-2,7V-1,3Mo-1Zr

Metod of manufacture

Hot-rolled

Cold-rolled

Cold-rolled

Surface condition

Machined

Pickling

Pickling

Ra2,5-3,2

Outer Diameter

 

 

 

mm

219-508

88,9-355

88,9-355

inch

11 - 18

3,5-14

3,5-14

Wall thicknness

 

 

 

mm

13-102

3,2-25,4

3,2-25,4

inch

1/2 - 4

1/8 - 1

1/8 - 1

Limit diameter deviatation

± 0,8%

± 0,8%

± 0,8%

Limit wall thicknness deviatation

 

 

 

ordinary accuracy -

± 12,5%

± 12,5%

± 12,5%

increased accuracy -

± 10,0%

± 10,0%

± 10,0%

Tube length

up to 8000 mm

up to 11000 mm

up to11000mm

Mechanical properties

 

 

 

σB, МПа/ KSi

min. 895/130

min. 720/104

min. 620/90

σ0,2, МПа/ KSi

min. 825/119

min. 630/91

min. 485/70

δ, %

min. 7,0

min. 15

min. 15

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.

Трубы большого диаметра

Tubes for riser