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Austenitic Stainless Steel Seamless Pipe/Tube

Home / Products / Austenitic Stainless Steel Seamless Pipe/Tube / ASTM A312 TP321/TP321H/S32100 SEAMLESS PIPES/TUBES

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Austenitic Stainless Steel Seamless Pipe/Tube

ASTM A312 TP321/TP321H/S32100 SEAMLESS PIPES/TUBES

Applications:

Power Generation: Applied in power plant boiler tubes, superheaters, and reheaters where steam and gas flow through high-temperature environments

Petrochemical and Refining Industry: Employed in heat exchangers, furnace tubes, and catalytic cracking systems where temperatures can reach up to 870°C (1600°F).

Aerospace Industry: Used in aircraft exhaust manifolds and high-temperature sections of jet engines due to their ability to maintain strength and resist oxidation at elevated temperatures.

Pharmaceutical Industry: Used in heat exchangers, evaporators, and piping systems for processing under high temperatures and with exposure to aggressive cleaning agents, ensuring material integrity and hygiene.

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Description

Product material

Alloy 321 (UNS S32100) is titanium stabilized austenitic stainless steel pipe with good general corrosion resistance. It has excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800 - 1500°F (427 - 816°C). The alloy resists oxidation to 1500°F (816°C) and has higher creep and stress rupture properties than alloys 304 and 304L. It also possesses good low-temperature toughness.

Alloy 321H (UNS S 32109) stainless steel pipe is the higher carbon (0.04 - 0.10) version of the alloy. It was developed for enhanced creep resistance and for higher strength at temperatures above 1000oF (537℃). In most instances, the carbon content of the plate enables dual certification.

Alloy 321 stainless steel pipe cannot be hardened by heat treatment, only by cold working. It can be easily welded and processed by standard shop fabrication practices.

Chemical Composition & Mechanical properties as per ASTM A312-17

Grade

CHEMICAL COMPOSITION(%)

Mechanical Properties

C

Mn

P

S

Si

Cr

Ni

Mo

N

Cu

Ti

TS,Min(Mpa)

YS, Min(Mpa)

Elongation Longitudinal, min%

TP321/S32100

0.08

2.00

0.045

0.03

1.00

17.0-19.0

9.0-12.0

-

0.1

-

5x(C+N)-0.70

≤9.53mm,515;＞9.53mm,480

≤9.53mm,205;＞9.53mm,170

35

TP321H/S32109

0.04-0.1

2.00

0.045

0.03

1.00

17.0-19.0

9.0-12.0

 

0.1

 

4x(C+N)-0.70

≤9.53mm,515;＞9.53mm,480

≤9.53mm,205;＞9.53mm,170

35

  • Toko pipe/tube products Forms:

    Straight seamless pipe with annealed and pickled.

    Coiled seamless tube with bright annealed and pickled.

    Stainless steel U tube.

    Stainless steel seamless tube with annealed and pickled.

    Stainless steel seamless tube with bright annealed and polished.

  • Toko Typical Manufacturing standard:

    ASTM A312 TP321, ASTM A312 TP321H

    ASTM A213 TP321, ASTM A213 TP321H

    ASTM A269 TP321, ASTM A269 TP321H

    EN10216 1.4541 EN10217-1 1.4541

PIPE DIMENSION AND TOLERANCE ACCORDING TO ASTM A312/ANSI B36.10&B36.19

INCH

DN

O.D.(mm)

Wall Thickness (mm)

Sch5s/5

Sch10s

Sch10

Sch40s

Sch40

Sch80s

Sch80

Sch100

Sch120

Sch140

Sch160

SchXXS

/STD

/XS

1/8

6

10.3

0.89

1.24

 

1.73

 

2.41

 

 

 

 

 

 

1/4

8

13.7

1.25

1.65

 

2.24

 

3.02

 

 

 

 

 

 

3/8

10

17.1

1.25

1.65

 

2.31

 

3.2

 

 

 

 

 

 

1/2

15

21.3

1.65

2.11

 

2.77

 

3.73

 

 

 

 

4.78

7.47

3/4

20

26.7

1.65

2.11

 

2.87

 

3.91

 

 

 

 

5.56

7.82

1

25

33.4

1.65

2.77

 

3.38

 

4.55

 

 

 

 

6.35

9.09

11/4

32

42.2

1.65

2.77

 

3.56

 

4.85

 

 

 

 

6.35

9.7

11/2

40

48.3

1.65

2.77

 

3.68

 

5.08

 

 

 

 

7.14

10.15

2

50

60.3

1.65

2.77

 

3.91

 

5.54

 

 

 

 

8.74

11.07

21/2

65

73

2.11

3.05

 

5.16

 

7.01

 

 

 

 

9.53

14.02

3

80

88.9

2.11

3.05

 

5.49

 

7.62

 

 

 

 

11.13

15.25

31/2

90

101.6

2.11

3.05

 

5.74

 

8.08

 

 

 

 

 

 

4

100

114.3

2.11

3.05

 

6.02

 

8.56

 

 

11.13

 

13.49

17.12

5

125

141.3

2.77

3.4

 

6.55

 

9.53

 

 

12.7

 

15.88

19.05

6

150

168.3

2.77

3.4

 

7.11

 

10.97

 

 

14.27

 

18.26

21.95

8

200

219.1

2.77

3.76

 

8.18

 

12.7

 

15.09

18.26

20.62

23.01

22.23

10

250

273.1

3.4

4.19

 

9.27

 

12.7

15.09

18.26

21.44

25.4

28.58

25.4

12

300

323.9

3.96

4.57

 

9.53

10.31

12.7

17.48

21.44

25.4

28.58

33.32

25.4

14

350

355.6

3.96

4.78

6.35

9.53

11.13

12.7

19.05

23.83

27.79

31.75

35.71

 

16

400

406.4

4.19

4.78

6.35

9.53

12.7

12.7

21.44

26.19

30.96

36.53

40.49

 

20

500

508

4.78

5.54

6.35

9.53

15.09

12.7

26.19

32.54

38.1

44.45

50.01

 

24

600

609.6

5.54

6.35

6.35

9.53

17.48

12.7

30.96

38.89

46.02

52.37

59.54

ASTM A312 Dimension Tolerance for Seamless pipe

Standards

ASTM A312 Seamless pipe

Outside Diameter(mm)

Tolerance(mm)

Outside Diameter

10.3-48.3

-0.80，+0.40

＞48.3-114.3

-0.80，+0.80

＞114.3-219.1

-0.80，+1.60

＞219.1-457.2

-0.80，+2.40

＞457-660.4

-0.80，+3.20

＞660.4-864

-0.80，+4.00

＞864-1219

-0.80，+4.80

Thickness

10.3-73

-12.5%,+20%

88.9-457.2, S/D≤5%

-12.5%,+22.5%

88.9-457,S/D＞5%

-12.5%,+15%

≥508, S/D≤5%

-12.5%,+22.5%

≥508, S/D＞5%

-12.5%,+15%
About Us

Shanghai Toko Technology Co.,ltd.

Shanghai Toko Technology Co.,ltd. is professional ASTM A312 TP321/TP321H/S32100 SEAMLESS PIPES/TUBES Suppliers and ASTM A312 TP321/TP321H/S32100 SEAMLESS PIPES/TUBES 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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