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Stainless Steel Welded Pipe/Tube

Duplex steel ASTM A789 UNS S32205/S31803 Control line/welded coiled tube

Applications:

Subsea Well Control: Used for hydraulic control lines in subsea wells and offshore oil platforms to control valves, actuators, and downhole equipment, thanks to their resistance to stress corrosion cracking in chloride-rich environments.
Chemical Injection Lines: Applied for delivering chemicals like corrosion inhibitors and methanol to subsea wells to prevent blockages and corrosion during oil and gas production.
Umbilicals: Incorporated into subsea umbilical systems that transport fluids, chemicals, or hydraulic power for controlling production processes.

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Description

Product material

TOKOTECH offered a wide range size of duplex steel welded coiled tubing. 2205/s31803 duplex steel welded coiled tubing is widely used in subsea oil well systems due to its long length. It has better corrosion resistance to seawater than common stainless steel, thus has a longer service life.

Chemical composition for 2205/S31803 duplex steel welded coiled tubing:

Standard

Grade

CHEMICAL COMPOSITION(%)

 

 

 

 

 

 

 

 

 

 

 

C

Mn

P

S

Si

Ni

Cr

Mo

N

Cu

ASTM A789

S32205/2205

0.030

2.00

0.03

0.02

1.00

4.5-6.5

22.0-23.0

3.0-3.5

0.14-0.2

-

 

S31803

0.03

2.00

0.03

0.02

1.00

4.5-6.5

21.0-23.0

2.5-3.5

0.08-0.2

-

2205/S31803 duplex steel welded coiled tubing pressure rating:

O.D.

Ave.W.T.

YS

YS

TS

TS

Max Theoretical Working Pressure

Theoretcial Collapse Pressure

Theoretical Burst Pressure

Inch

MM

Inch

MM

MPA

KSI

MPA

KSI

PSI

PSI

PSI

1/4

6.35

0.035

0.89

450

70

655

95

14440

15166

23486

1/4

6.35

0.049

1.24

450

70

655

95

21026

19959

32722

1/4

6.35

0.065

1.65

450

70

655

95

29538

24731

43542

3/8

9.53

0.035

0.89

450

70

655

95

9348

10646

15755

3/8

9.53

0.049

1.24

450

70

655

95

13399

14305

21950

3/8

9.53

0.065

1.65

450

70

655

95

18451

18213

29208

1/2

12.7

0.035

0.89

450

70

655

95

6917

8195

11862

1/2

12.7

0.049

1.24

450

70

655

95

9841

11118

16527

1/2

12.7

0.065

1.65

450

70

655

95

13427

14329

21991

1/2

12.7

0.083

2.11

450

70

655

95

17673

17655

28122

3/4

19.05

0.035

0.89

450

70

655

95

4548

5603

7935

3/4

19.05

0.049

1.24

450

70

655

95

6424

7672

11055

3/4

19.05

0.065

1.65

450

70

655

95

8688

10000

14711

3/4

19.05

0.083

2.11

450

70

655

95

11319

12489

18812

 

13

0.035

0.89

450

70

655

95

6751

8020

11591 

ASTM A789/789M Dimension tolerance for 2205/s31803 duplex steel coiled tubing

O.D. mm

O.D. tolerance(mm)

Thickness Tolerance

＜12.7

-0.13,+0.13

-15%,+15%

≥12.7-38.1

-0.13,+0.13

-10%,+10%

≥38.1-88.9

-0.25,+0.25

-10%,+10%

≥88.9-139.7

-0.38,+0.38

-10%,+10%

≥139.7-203.2

-0.76,+0.76

-10%,+10%
About Us

Shanghai Toko Technology Co.,ltd.

Shanghai Toko Technology Co.,ltd. is professional Duplex steel ASTM A789 UNS S32205/S31803 Control line/welded coiled tube Suppliers and Duplex steel ASTM A789 UNS S32205/S31803 Control line/welded coiled tube Factory, located in Shanghai, China, and has been worked in the field of industrial piping for 11 years. We are committed to manufacturing and exporting stainless steel seamless pipe, stainless steel welded pipes, stainless steel fittings and flanges, nickel alloy products, Titanium seamless and welded tubes, etc. Our factories are all ISO&PED certificated, and the products can be produced in standard ASTM, JIS, DIN, EN, GOST, etc. Our products are widely used in the Oil and Gas, Petrochemical, Sugar Refining, Water Process, Desalination, Geothermal industry etc. We exported to dozens of countries and regions such as USA, Canada, Japan, Germany, France, Korea, Turkey ect.

Our Vision: To be an excellent supplier of global industrial piping system solutions.

Our Mission: To help global industrial pipeline construction with the products made in China.

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