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ASTM A312 TP304/304L/321/316/316L/316ti/310S/904L Ss Seamless/Welded Stainless Steel Pipe

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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ASTM A312 TP304/304L/321/316/316L/316ti/310S/904L Ss Seamless/Welded Stainless Steel Pipe
We can easily usually fulfill our respected customers with our very good top quality, very good price tag and excellent support due to we have been more expert and much more hard-working and do it in cost-effective way for 430 stainless steel sheets, 409L stainless steel plate, 410s Stainless Steel. We are committed to making the product more efficient and extending the service life, which will reduce the costs of the overall cycle. The core task of our company is to establish a good corporate culture to mobilize the enthusiasm and initiative of employees. Distribution density strategy is very important to our company, because it will affect our market coverage, market share and sales volume. Customer satisfaction is our constant pursuit. May our flexible and diverse products and strong technical strength foundation fulfill the expectations of customers, and wish our company grow with yours.

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 are confident that our quality ASTM A312 TP304/304L/321/316/316L/316ti/310S/904L Ss Seamless/Welded Stainless Steel Pipe will be the best choice for our customers to enhance their brand image. By integrating manufacturing with foreign trade sectors, we present total customer solutions by guaranteeing the delivery of right merchandise to the right place at the right time, which is supported by our abundant experiences, powerful production capability, consistent quality, diversified products as well as before and after sales services. Our company provides the most comprehensive services and cooperation to our customers in the spirit of great breadth of mind.
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