Duplex ASTM A790 UNS S31803 Manufacturer in India

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Uns S31803 Pipe Suppliers, check Duplex S31803 Seamless Tube Specification, We stock and Supply Duplex S31803 Rectangular and Square pipe in various size, ASME SA790 UNS S31803 Duplex Steel Seamless Pipe tube manufacturer in india at guaranteed best price in india

Manufacturer & Supplier of Duplex ASTM A790 UNS S31803 Pipe


The alloy grades of stainless steel like UNS S31803 can be very useful in applications where stress corrosion cracking is a risk. Stress corrosion cracking (SCC) in pipes can be bad for both the workers in the factory and the business itself. This is because it can cause pipes to break. Because ASTM A790 UNS S31803 Duplex Steel Seamless Pipe is resistant to SCC, the piping system is more durable and it lasts longer than normal steels, which are more likely to break down.

UNS S31803 is a type of duplex steel that is covered by ASTM A790 UNS S31803. The material is an alloy of steel that has chromium and molybdenum in it, as well as steel itself. The addition of these materials makes the pipes more durable and less likely to corrode, which makes them stronger. The SA 790 UNS S31803 grade is one of the super duplex grades that is stronger and more resistant to corrosion than other grades of metal. The three types of duplexes are called duplex, lean, and super duplex, and they are broken down into these groups: Duplex If you need something that can work at a high temperature, you use the super duplex. The Duplex UNS S31803 Pipes also have a lot more strength because of how they were made. The material could be hot rolled and welded, or it could be cold drawn and rolled. The cold drawn pipes are seamless and have less absolute roughness, which makes them very accurate in their dimensions because they have less of it. The hot rolled and Welded A928 UNS S31803 material, on the other hand, is much more durable and can be used for welding. The ASTM A790 UNS S31803 Tube is easy to weld, which makes it a good choice for high-pressure applications that will need a lot of welding when they are installed.

The SA 790 UNS S31803 Tubing is also very resistant to corrosion in sea water and other chloride ion rich environments, such as a salt water pool. When it comes to long-term costs, this chloride ion corrosion stress cracking resistance makes it one of the best options. Pipes that are made of Duplex 31803 stainless steel are used in very important applications where the measurements need to be very precise. But the pipes aren't as strong as the Duplex UNS S31803 Welded Pipes because they aren't made of metal like they are. In sea water and marine environments, chemical industries, food processing plants, heat generators, automobile parts, boiler parts, and other high temperature applications, DSS ERW Pipes can be used. Also, the Duplex S31803 UNS EFW Pipes can also be used with less specific application needs.
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ASTM A790 UNS S31803 Seamless Pipe Specifications

ASTM Specification

ASTM A790 ASME SA790

Applicable Standard

ASTM, ASME, JIS, AISI, AMS, EN, SAE, DIN, NF, TOCT, DS, DTD, GB

Size

4 to 219mm W. T.: 0.5 to 20mm

Welded Pipe Size

5.0 – 1219.2 mm

EFW Pipe size

5.0 – 1219.2 mm

Finish

Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF, NO.1, NO.4, 2B, BA, HL, 8K, Mirror finish, etc

Swg & Bwg

10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg.

Schedule

SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS

Length

Single Random, Double Random, Standard & Cut length Pipe

Form

Duplex 2205 Pipe are available in form of Round, Square, Hollow, Rectangular, Hydraulic, Coiled, Straight Pipes, “U” Shape, Pan Cake Coils etc.

Type

Seamless / ERW/ EFW / Welded / Fabricated / CDW / DOM / CEW Duplex 2205 Pipe

Pipe End

Plain End, Beveled End, Treaded Pipe, Screwed ends

Application

Dairy Pipe, Oil Pipe, Gas Pipe, Fluid Pipe, Boiler Pipe for Chemical Industry

Chemical Composition of ASTM A928 UNS S31803 Welded Tubing

Carbon

0.03 max

Manganese

2.00 max

Phosphorus

0.03 max

Sulfur

0.02 max

Silicon

1.00 max

Nickel

4.50 – 6.50

Chromium

21.00 – 21.30

Molybdenum

2.50 – 3.50

Nitrogen

0.08 – 0.20

Duplex 31803 Seamless Pipes Mechanical Behaviour

Tensile Strength, min, ksi, [MPa] 90 [ 620]
Yield Strength, min, ksi [MPa] 65 [450]
Elongation in 2 in. or 50mm, min, % 25
Hardness, max HBW HRC
290 30

Heat Treatment of UNS S31803 Welded Pipe

Annealing Temperature °F [°C]

1870 – 2010 [1020 – 1100]

Quenching

Rapid Cooling in Air or Water

SA 790 welded pipe Size Chart

13.72

1.65

1/4

10S

0.50

13.72

2.24

1/4

40S

0.64

13.72

3.02

1/4

80S

0.81

17.15

1.65

3/8

10S

0.64

17.15

2.31

3/8

40S

0.86

17.15

3.20

3/8

80S

1.12

21.34

2.11

1/2

10S

1.02

21.34

2.77

1/2

40S

1.29

21.34

3.73

1/2

80S

1.65

26.67

2.11

3/4

10S

1.30

26.67

2.87

3/4

40S

1.71

26.67

3.91

3/4

80S

2.23

33.40

2.77

1

10S

2.13

33.40

3.38

1

40S

2.54

33.40

4.55

1

80S

3.29

33.40

6.352)

1

160

4.30

42.16

2.77

10S

2.73

42.16

3.56

40S

3.44

42.16

4.85

80S

4.53

42.16

6.352)

160

5.69

48.26

2.77

10S

3.16

48.26

3.68

40S

4.11

48.26

5.08

80S

5.49

60.33

2.77

2

10S

3.99

60.33

3.91

2

40S

5.52

60.33

5.54

2

80S

7.60

60.33

8.742)

2

160

11.29

73.03

3.05

10S

5.35

73.03

5.16

40S

8.77

73.03

7.01

80S

11.59

88.90

3.05

3

10S

6.56

88.90

5.49

3

40S

11.47

88.90

7.62

3

80S

15.51

88.90

11.132)

3

160

21.67

101.60

3.05

10S

7.53

101.60

5.74

40S

13.78

101.60

8.08

80S

18.92

114.30

3.05

4

10S

8.50

114.30

6.02

4

40S

16.32

114.30

8.56

4

80S

22.67

114.30

13.492)

4

160

34.05

141.30

6.55

5

40S

22.10

141.30

9.53

5

80S

31.44

141.30

15.882)

5

160

49.87

168.28

3.4

6

10S

14.04

168.28

7.11

6

40S

28.69

168.28

10.97

6

80S

43.21

168.28

14.27

6

120

54.75

168.28

18.262)

6

160

68.59

219.08

8.18

8

40S

43.20

219.08

12.7

8

80S

65.63

219.08

18.23

8

120

91.30

219.08

23.012)

8

160

112.97

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