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Schedule 80 stainless steel pipe

Date:2025-05-21View:6Tags:stainless steel pipe, austenitic stainless steel, schedule 80 stainless steel pipe
Stainless steel pipescan be manufactured according to different uses and specifications. Specification refers to the size of the pipe, specifically the wall thickness of the pipe. As the specification increases, the thickness of the pipe wall will also increase, while the diameter can remain unchanged.

Schedule (SCH) refers to the number of the American standard pipe series. The larger the value of the number, the thicker the pipe wall. Unlike the Schedule 10 pipe and the Schedule 40 pipe, the Schedule 80 pipe has relatively higher strength and is specifically designed for high temperatures
Designed for application, it features a very high pressure-bearing capacity and superior resistance to rust, pitting and oxidation.


Schedule 80 stainless steel pipe


Relevant standards

ASTM A312/A313: Standard for seamless and welded austenitic stainless steel pipes, covering
Grades such as 304/304L and 316/316L.
ASTM A358: Standard for Welded Stainless Steel pipes in high-temperature applications.
ASME B36.19M: Standard for Dimensions and Wall Thickness of Stainless Steel pipes.

schedule 80 Stainless steel pipe dimensions:


Nominal size [inches]

Outside diameter [inches]

Outside diameter [mm]

Wall thickness [inches]

Wall thickness [mm]

Weight [lb/ft]

Weight [kg/m]

1/2 Inches

0.840 Inches

21.3 MM

0.065 Inches

1.65 MM

0.54 lb/ft

0.80 kg/m

3/4 Inches

1.050 Inches

26.7 MM

0.065 Inches

1.65 MM

0.69 lb/ft

1.03 kg/m

1 Inches

1.315 Inches

33.4 MM

0.065 Inches

1.65 MM

0.87 lb/ft

1.30 kg/m

1 1/4 Inches

1.660 Inches

42.2 MM

0.065 Inches

1.65 MM

1.12 lb/ft

1.66 kg/m

1 1/2 Inches

1.900 Inches

48.3 MM

0.065 Inches

1.65 MM

1.28 lb/ft

1.91 kg/m

2 Inches

2.375 Inches

60.3 MM

0.065 Inches

1.65 MM

1.61 lb/ft

2.40 kg/m

2 1/2 Inches

2.875 Inches

73.0 MM

0.083 Inches

2.11 MM

2.49 lb/ft

3.71 kg/m

3 Inches

3.500 Inches

88.9 MM

0.083 Inches

2.11 MM

3.05 lb/ft

4.54 kg/m

3 1/2 Inches

4.000 Inches

101.6 MM

0.083 Inches

2.11 MM

3.50 lb/ft

5.21 kg/m

4 Inches

4.500 Inches

114.3 MM

0.083 Inches

2.11 MM

3.95 lb/ft

5.88 kg/m

5 Inches

5.563 Inches

141.3 MM

0.109 Inches

2.77 MM

6.40 lb/ft

9.52 kg/m

6 Inches

6.625 Inches

168.3 MM

0.109 Inches

2.77 MM

7.65 lb/ft

11.38 kg/m

8 Inches

8.625 Inches

219.1 MM

0.109 Inches

2.77 MM

9.99 lb/ft

14.87 kg/m

10 Inches

10.750 Inches

273.1 MM

0.134 Inches

3.4 MM

15.29 lb/ft

22.76 kg/m

12 Inches

12.750 Inches

323.9 MM

0.156 Inches

3.96 MM

21.13 lb/ft

31.44 kg/m

14 Inches

14.000 Inches

355.6 MM

0.156 Inches

3.96 MM

23.22 lb/ft

34.56 kg/m

16 Inches

16.000 Inches

406.4 MM

0.165 Inches

4.19 MM

28.11 lb/ft

41.83 kg/m

18 Inches

18.000 Inches

457.0 MM

0.165 Inches

4.19 MM

31.64 lb/ft

47.09 kg/m

20 Inches

20.000 Inches

508.0 MM

0.188 Inches

4.78 MM

40.12 lb/ft

59.70 kg/m

22 Inches

22.000 Inches

559.0 MM

0.188 Inches

4.78 MM

44.18 lb/ft

65.75 kg/m

24 Inches

24.000 Inches

610.0 MM

0.218 Inches

5.54 MM

55.85 lb/ft

83.11 kg/m

30 Inches

30.000 Inches

762.0 MM

0.250 Inches

6.35 MM

80.02 lb/ft

119.09 kg/m

Common inspection methods:
Non-destructive testing: radiographic testing (RT), ultrasonic testing (UT), and magnetic particle testing (MT) to ensure internal and weld quality.
Hydrostatic test: Conduct hydraulic or pneumatic tests in accordance with standard requirements to verify the pressure-bearing capacity.
Mechanical property tests: tensile, impact and hardness tests.

Typical application fields:

Chemical engineering and petrochemicals: High-temperature and high-pressure reactors, distillation tower reboiler tube bundles.
Marine engineering: Seawater pumping, offshore platform pipelines.
Boilers and heat exchangers: High-temperature steam, heat carrier medium.
Food and beverage: Sterile delivery tubes, sanitary devices.
Pharmaceuticals and biology: Cleaning circulation and purification process pipelines.

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