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Duplex 904L Stainless Steel Pipe with Competitive Price

The duplex stainless steel tubing is principally applied to seawater environment, petrochemical industry, fertilizer industry, oil refining industry, oil and natural gas transportation, light industry and food sector, pulp and papermaking industry, and energy and environmental security market.

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Duplex 904L Stainless Steel Pipe with Competitive Price
Our firm since its inception, normally regards item top quality as company life, constantly make improvements to generation technology, improve product excellent and repeatedly strengthen organization total good quality management, in strict accordance with the national standard ISO 9001:2000 for Rectangular Pipe, 410 stainless steel plate, 410s stainless steel coil. We will carry out the clear good brand strategy for a long time. In the next few years, this will be reflected in the large range of good products and market offensive. The company has gathered a group of top technical and managerial talents in the industry. Inspired by our corporate culture, each of our employees continues to pursue excellence through their own practices and experiences.

Product Description

The duplex stainless steel tubing is principally applied to seawater environment, petrochemical industry, fertilizer industry, oil refining industry, oil and natural gas transportation, light industry and food sector, pulp and papermaking industry, and energy and environmental security market.


Production Standard: ASTM A789(ASME SA789)

Seamless and Welded Ferrite/Austenitic Stainless Steel Tube for General Use ASTM A790(ASME SA790)

Seamless and Welded Ferrite/Austenitic Stainless Steel Nominal Tube ASTM A928

Standard for Filler Metal Electric-fusion-welded Ferrite/Austenitic (Duplex) Stainless Steel Tube


Production Rang :

Norminal Pipe Size

Outside DiameterNorminal Wall Thickness (mm)

NPS

in

BN

mm

SCH5s

SCH10s

SCH40s

SCH80s

1/8

0.405

6

10.3

--

1.24

1.73

2.41

1/4

0.540

8

13.7

--

1.65

2.24

3.02

3/8

0.675

10

17.1

--

1.65

2.31

3.2

1/2

0.840

15

21.3

1.65

2.11

2.77

3.73

3/4

1.050

20

26.7

1.65

2.11

2.87

3.91

1

1.315

25

33.4

1.65

2.77

3.38

4.55

1 1/4

1.660

32

42.2

1.65

2.77

3.56

4.85

1 1/2

1.900

40

48.3

1.65

2.77

3.68

5.08

2

2.375

50

60.3

1.65

2.77

3.91

5.54

2 1/2

2.875

65

73.0

2.11

3.05

5.16

7.01

3

3.500

80

88.9

2.11

3.05

5.49

7.62

3 1/2

4.000

90

101.6

2.11

3.05

5.74

8.08

4

4.500

100

114.3

2.11

3.05

6.02

8.56

5

5.563

125

141.3

2.77

3.4

6.55

9.53

6

6.625

150

168.3

2.77

3.4

7.11

10.97

8

8.625

200

219.1

2.77

3.76

8.18

12.7

10

10.750

250

273.1

3.4

4.19

9.27

12.7

12

12.750

300

323.9

3.96

4.57

9.53

12.7

14

14.000

350

355.6

3.96

4.78

9.53

--

16

16.000

400

406.4

4.19

4.78

9.53

--

18

18.000

450

457.2

4.19

4.78

9.53

--

20

20.000

500

508.0

4.78

5.54

9.53

--

22

22.000

550

558.8

4.78

5.54

--

--

24

24.000

600

609.6

5.54

6.35

9.53

--

26

26.000

650

660.4

--

--

--

--

28

28.000

700

711.2

--

--

--

--

30

30.000

750

762.0

6.35

7.92

--

--

32

32.000

800

812.8

--

7.92

--

--

34

34.000

850

863.6

--

7.92

--

--

36

36.000

900

914.4

--

7.92

--

--

38

38.000

950

965.2

--

--

--

--

40

40.000

1000

1016.0

--

9.53

--

--

If you need more sizes, please consult with us


Main grade description in different standard

ASTM

DIN / EN

JIS

GB

ISO Name

S32750 / 2507

1.4410

-

S25073

X2CrNiMoN25–7-4

S32205 / 2205

-

-

S22053

- 

S31803

1.4462

SUS329J3L

S22253

X2CrNiMoN22-5-3


Main grade chemical component in different standard

2507

C %

Si %

Mn %

P %

S %

Ni %

Cr %

Mo %

N %

Cu %

ASTM

0.03

0.08

2.00

0.04

0.02

6.0-8.0

24 0-26 0

3.0-5.0

0.24-0.32

0.5

DIN/EN

0,03

1,00

2,00

0,035

0,015

6,0-8,0

24,0-26,0

3,0-4,5

0,24-0,35

-

JIS

-

-

-

-

-

-

-

-

-

-

GB

0.03

0.08

1.20

0.04

0.02

6.0-8.0

24.0-26.0

3.0-5.0

0.24-0.32

0.5

2205

C %

Si %

Mn %

P %

S %

Ni %

Cr %

Mo %

N %

Cu %

ASTM

0.03

1.00

2.00

0.030

0.020

4.5-6.5

22.0-23.0

3.0-3.5

0.14-0.20

-

DIN/EN

-

-

-

-

-

-

-

-

-

-

JIS

-

-

-

-

-

-

-

-

-

-

GB

0.03

1.00

2.00

0.03

0.02

4.5-6.5

22.0-23.0

3.0-3.5

0.14-0.20

-

S31803

C %

Si %

Mn %

P %

S %

Ni %

Cr %

Mo %

N %

Cu %

ASTM

0.03

1.00

2.00

0.030

0.020

4.5-6.5

21.0-23.0

2.5-3.5

0.08-0.20

-

DIN/EN

0,03

1,00

2,00

0,035

0,015

4,5-6,5

21,0-23,0

2,5-3,5

0,10-0,22

-

JIS

0.03

1.00

2.00

0.040

0.030

4.5-6.5

21.0-24.0

2.5-3.5

0.08-0.20

-

GB

0.03

1.00

2.00

0.030

0.020

4.5-6.5

21.0-23.0

2.5-3.5

0.08-0.20

-


Main grade mechanical property in different standard

2507

Y.S./Mpa ≥

T.S./Mpa ≥

E.L./% ≥

HB ≤

HRC ≤

HBW ≤

HV ≤

ASTM

550

795

15

-

32

310

-

JIS

-

-

-

-

-

-

-

GB

550

795

15

-

32

310

-

2205

Y.S./Mpa ≥

T.S./Mpa ≥

E.L./% ≥

HB ≤

HRC ≤

HBW ≤

HV ≤

ASTM

450

655

25

-

31

293

-

JIS

-

-

-

-

-

-

-

GB

450

620

25

-

31

293

-

S31803

Y.S./Mpa ≥

T.S./Mpa ≥

E.L./% ≥

HB ≤

HRC ≤

HBW ≤

HV ≤

ASTM

420

620

25

-

31

293

-

JIS

450

620

18

-

32

302

320

GB

450

620

25

-

31

293

-


Production Process and Feature

Duplex stainless steel tubes are developed to the next generation since they were created in the United States from the 1940s. Its main feature is that the yield strength can attain 400-550MPa, which is double that of stainless steel, so it can save materials and decrease equipment manufacturing costs. Concerning corrosion resistance, particularly when the moderate environment is comparatively harsh (for example, sea water and higher chloride ion content), the resistance to pitting, crevice corrosion, stress corrosion and corrosion fatigue of duplex stainless steel is considerably better than that of ordinary austenite Stainless steel is similar to high-alloy austenitic stainless steel.


Due to the features of this two-phase structure, following the right chemical composition and heat treatment process, the duplex stainless steel has the benefits of the ferritic stainless steel and austenitic stainless steel. It combines the superb toughness and weldability of austenitic stainless steel with The greater durability and chloride stress corrosion resistance of ferritic stainless steel are split together. It's these superior properties which make duplex stainless steel grow rapidly as a weldable structural material. Since the 1980s, it is now a martensitic type.


Application

Duplex stainless steel pipe has good corrosion resistance to wear and fatigue corrosion. Under some corrosive media requirements, it's acceptable for manufacturing pipes, valves, pumps and other power equipment.


We insist on improving production technology, ensuring safety production and improving the quality of our Duplex 904L Stainless Steel Pipe with Competitive Price. All of the time, we have been paying attention on all information to insure each product or service glad by our customers. We always follow the business philosophy of "maximizing performance and rationalizing profit".
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