ASME B36.19
ASME B36.19 Stainless Steel Pipe
ASME B36.19 is a dimensional standard for stainless steel pipes, complementing ASME B36.10, which is used for carbon and alloy steel pipes. ASME B36.19 provides a uniform set of dimensions to ensure compatibility and reliability in stainless steel piping systems.
Key Features of ASME B36.19:
- Covers seamless and welded stainless steel pipes.
- Defines pipe dimensions in both inches and millimeters.
- Includes schedules such as 5S, 10S, 40S, and 80S, with the “S” indicating stainless steel.
- Specifies nominal pipe sizes DN 6 to DN 1200 in mm
- Ensures uniform wall thickness for consistent mechanical performance.
Stainless Steel Pipe Material Grades Under ASME B36.19
ASME B36.19 primarily applies to stainless steel pipes manufactured from various grades of austenitic stainless steels, which are known for their corrosion resistance, strength, and durability. Common grades include:
- ASTM A312: Covers seamless, welded, and heavily cold-worked stainless steel pipes.
- ASTM A358: Covers electric fusion-welded stainless steel pipes.
- ASTM A778: Covers welded, unannealed stainless steel pipes.
- ASTM A269: Covers seamless and welded stainless steel tubing for general service.
Common Stainless Steel Grades Used:
- 304/304L Stainless Steel: Offers good corrosion resistance and is widely used in general applications.
- 316/316L Stainless Steel: Provides superior corrosion resistance, especially in marine and chemical environments.
- 321 Stainless Steel: Contains titanium for improved resistance to intergranular corrosion.
- 347 Stainless Steel: Includes niobium for high-temperature applications.
Pipe Dimensions and Schedules in ASME B36.19
SS Pipe Schedule Chart for Schedule 5, Schedule 10 and Schedule 30 (in mm)
DN in mm OD 5 10 20 30
6 10.3 1.24
8 13.7 1.65
10 17.1 1.65 1.85
15 21.3 1.65 2.11 2.41
20 26.7 1.65 2.11 2.41
25 33.4 1.65 2.77 2.9
32 42.2 1.65 2.77 2.97
40 48.3 1.65 2.77 3.18
50 60.3 1.65 2.77 3.18
65 73 2.11 3.05 4.78
80 88.9 2.11 3.05 4.78
90 101.6 2.11 3.05 4.78
100 114.3 2.11 3.05 4.78
125 141.3 2.77 3.4
150 168.3 2.77 3.4
200 219.1 2.77 3.76 6.35 7.04
250 273 3.4 4.19 6.35 7.8
300 323.8 3.96 4.57 6.35 8.38
350 355.6 3.96 6.35 7.92 9.53
400 406.4 4.19 6.35 7.92 9.53
450 457 4.19 6.35 7.92 11.13
500 508 4.78 6.35 9.53 12.7
550 559 4.78 6.35 9.53 12.7
600 610 5.54 6.35 9.53 14.27
650 660 7.92 12.7
700 711 7.92 12.7 15.88
750 762 6.35 7.92 12.7 15.88
800 813 7.92 12.7 15.88
850 864 7.92 12.7 15.88
900 914 7.92 12.7 15.88
SS Pipe Schedule Chart Schedule 40, Schedule STD, Schedule 60, Schedule 80, and Schedule XS (in mm)
DN in mm OD 40 Std 60 80 XS
6 10.3 1.73 1.73 2.41 2.41
8 13.7 2.24 2.24 3.02 3.02
10 17.1 2.31 2.31 3.2 3.2
15 21.3 2.77 2.77 3.73 3.73
20 26.7 2.87 2.87 3.91 3.91
25 33.4 3.38 3.38 4.55 4.55
32 42.2 3.56 3.56 4.85 4.85
40 48.3 3.68 3.68 5.08 5.08
50 60.3 3.91 3.91 5.54 5.54
65 73 5.16 5.16 7.01 7.01
80 88.9 5.49 5.49 7.62 7.62
90 101.6 5.74 5.74 8.08 8.08
100 114.3 6.02 6.02 8.56 8.56
125 141.3 6.55 6.55 9.53 9.53
150 168.3 7.11 7.11 10.97 10.97
200 219.1 8.18 8.18 10.31 12.7 12.7
250 273 9.27 9.27 12.7 15.09 12.7
300 323.8 10.31 9.53 14.27 17.48 12.7
350 355.6 11.13 9.53 15.09 19.05 12.7
400 406.4 12.7 9.53 16.66 21.44 12.7
450 457 14.27 9.53 19.05 23.83 12.7
500 508 15.09 9.53 20.62 26.19 12.7
550 559 9.53 22.23 28.58 12.7
600 610 17.48 9.53 24.61 30.96 12.7
650 660 9.53 12.7
700 711 9.53 12.7
750 762 9.53 12.7
800 813 17.48 9.53 12.7
850 864 17.48 9.53 12.7
900 914 19.05 9.53 12.7
950 965 9.53 12.7
1000 1016 9.53 12.7
1050 1067 9.53 12.7
1100 1118 9.53 12.7
1150 1168 9.53 12.7
1200 1219 9.53 12.7
SS Pipe Schedule 100, Schedule 120, Schedule 140, Schedule 160, and Schedule XXS
DN in mm OD 100 120 140 160 XXS
15 21.3 4.78 7.47
20 26.7 5.56 7.82
25 33.4 6.35 9.09
32 42.2 6.35 9.7
40 48.3 7.14 10.16
50 60.3 8.74 11.07
65 73 9.53 14.02
80 88.9 11.13 15.24
90 101.6 16.15
100 114.3 11.13 13.49 17.12
125 141.3 12.7 15.88 19.05
150 168.3 14.27 18.26 21.95
200 219.1 15.09 18.26 20.62 23.01 22.23
250 273 18.26 21.44 25.4 28.58 25.4
300 323.8 21.44 25.4 28.58 33.32 25.4
350 355.6 23.83 27.79 31.75 35.71
400 406.4 26.19 30.96 36.53 40.49
450 457 29.36 34.93 39.67 45.24
500 508 32.54 38.1 44.45 50.01
550 559 34.93 41.28 47.63 53.98
600 610 38.89 46.02 52.37 59.54
Pipe Schedule Chart for Stainless Steel Pipe in Millimeter (Sch 5s, 10s, 40s and 80s)
DN in mm OD 5s 10s 40s 80s
6 10.3 1.24 1.73 2.41
8 13.7 1.65 2.24 3.02
10 17.1 1.65 2.31 3.2
15 21.3 1.65 2.11 2.77 3.73
20 26.7 1.65 2.11 2.87 3.91
25 33.4 1.65 2.77 3.38 4.55
32 42.2 1.65 2.77 3.56 4.85
40 48.3 1.65 2.77 3.68 5.08
50 60.3 1.65 2.77 3.91 5.54
65 73 2.11 3.05 5.16 7.01
80 88.9 2.11 3.05 5.49 7.62
90 101.6 2.11 3.05 5.74 8.08
100 114.3 2.11 3.05 6.02 8.56
125 141.3 2.77 3.4 6.55 9.53
150 168.3 2.77 3.4 7.11 10.97
200 219.1 2.77 3.76 8.18 12.7
250 273 3.4 4.19 9.27 12.7
300 323.8 3.96 4.57 9.53 12.7
350 355.6 3.96 4.78 9.53 12.7
400 406.4 4.19 4.78 9.53 12.7
450 457 4.19 4.78 9.53 12.7
500 508 4.78 5.54 9.53 12.7
550 559 4.78 5.54
600 610 5.54 6.35 9.53 12.7
750 762 6.35 7.92
Manufacturing Processes
ASME B36.19 stainless steel pipes can be manufactured using different processes, each affecting the pipe’s performance and application suitability.
1. Seamless Pipes
Seamless stainless steel pipes are produced without welding joints, offering superior strength and corrosion resistance. These pipes are ideal for high-pressure applications and critical industries like chemical processing and oil & gas.
Manufacturing Process:
- Raw stainless steel billets are heated and pierced to form a hollow tube.
- The tube is elongated and reduced to the desired dimensions using a series of rolling mills.
- The final product undergoes heat treatment, pickling, and testing.
2. Welded Pipes
Welded stainless steel pipes are manufactured by rolling stainless steel sheets into cylindrical forms and welding the edges together.
Types of Welded Pipes:
- Electric Resistance Welded (ERW): Uses electrical resistance to join the edges.
- Fusion Welded (EFW): Uses high-frequency electrical energy to create a seamless-like weld.
- Submerged Arc Welded (SAW): Utilizes a submerged arc welding process for larger pipe diameters.
Welded pipes are commonly used in structural applications and industries where high-pressure resistance is not a critical requirement.
Application
1. Oil & Gas Industry
2. Chemical & Petrochemical Industry
3. Food & Beverage Industry
4. Pharmaceutical Industry.
5. Power Generation
6. Water Treatment & Desalination
7. Construction & Infrastructure