Zhejiang Matech Industry Company Limited

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Hangzhou Matech Steel Company Limited
Tel: +86-571-28350111
Fax: +86-571-86693517
Email: sales@matech-steel.com
Add: Floor 10, Xixi Vally E-Building, Xihu District, Hangzhou, Zhejiang province, China
Duplex Stainless Steel Pipe

Duplex Stainless Steel Pipe

Duplex Stainless Steel Pipe | Austenitic-Ferritic Stainless Steel Tubes We can produce and deliver nearly any duplex material requirement in pipe, tube or fittings. What is Duplex Stainless Steel? Duplex Stainless Steel is a type of steel containing the high amount of chromium and minimum amount...

Duplex Stainless Steel Pipe | Austenitic-Ferritic Stainless Steel Tubes

We can produce and deliver nearly any duplex material requirement in pipe, tube or fittings.

What is Duplex Stainless Steel?

Duplex Stainless Steel is a type of steel containing the high amount of chromium and minimum amount of nickel. It provides great strength and resistance to corrosive environments. It is used in desalination plants, heat exchangers, and marine processes.

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Duplex Stainless Steel is a type of austenitic stainless steel that comprises of nickel and chromium majorly, along with other elements like nitrogen and molybdenum. This stainless steel alloy offers good resistance to localized as well as to uniform corrosion. The duplex microstructure of the alloy contributes to the high strength and high resistance to stress corrosion cracking. It has good weld ability and offers many beneficial properties of ferritic and austenitic steels combined.

Duplex Stainless Steel gives very good resistance to pitting and crevice corrosion and has high resistance to stress corrosion cracking and corrosion fatigue. It displays high mechanical strength and also provides good abrasion and erosion resistance. It is used in chemical, Oil and gas and marine industries. Other uses if the duplex stainless steel is in pollution control equipments, pulp & paper manufacturing, seawater desalination plants and in flue-gas cleaning to name a few.

Typical Properties:

· Low cost

· Alternative to high nickel based alloys

· High strength

· Corrosion resistant

· Very hard machining

Specification: ASTM A790 (Seamless Pipes) ASTM A928 (Welded Pipes) 

Chemical Composition

Grade

Chemical Composition

C (max)

Si (max)

Mn (max)

P (max)

S (max)

Cr

Ni

Mo

N

Cu

S32750

0.030

0.8

1.2

0.030

0.015

24.0-26.0

6.8-8.0

3.0-5.0

0.24-0.32

0.5 max

S13803

0.030

1.0

2.0

0.030

0.020

21.0-23.0

4.50-6.50

2.50-3.50

0.08-0.20

 

Physical Propertie

Grade

Physical Propertie

Y.S. MPa (min)

T.S. MPa (min)

Elongation %

Hardness HRC

S32750

550

800

15

31

S13803

450

620

25

31

 

Size range for duplex pipes

W.T.

1.0

1.2

1.5

1.65

2.0

2.11

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

15

16

18

19.05

22

25.4

31.8

35

38.1

42

45

50.8

55

60

65

70

75

80

90

101.6

114.3

121

127

133

141.3

159

168.3

Note: For sizes other than given, please check with our office for further confirmation.

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    Hangzhou Matech Steel Company Limited
    Tel: +86-571-28350111
    Fax: +86-571-86693517
    Email: sales@matech-steel.com
    Add: Floor 10, Xixi Vally E-Building, Xihu District, Hangzhou, Zhejiang province, China
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