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» Pipe & Tube » ASME B36.19M Stainless Steel Pipe

ASME B36.19M Stainless Steel Pipe

July 2, 2019

Scope & Material & Tolerance

ASME B36.19M is the standard specification for both welded and seamless stainless steel pipes. These stainless steel pipes may be used for high or low temperatures and pressures. This dimensional standard not only can be applied to wrought stainless steel pipes but can also be extensively applied to non-ferrous alloy pipes such as titanium, zirconium, copper and aluminum. Pipes conforming to ASME B36.19M dimensions shall be manufactured in accordance with relative ASTM and ASME material specification. The variations in dimensions or dimensional tolerances differ depending upon the method of manufacture employed in making the pipe to various specifications available. Permissible variations or tolerances are indicated in each specification.

Size & End Preparation

ASME B36.19M covers dimensions of pipes sized from NPS 1/8 (DN 6) to NPS 30 (DN 750). Sizes larger than 30″ are also commercially available in accordance with ASME B36.10M. Pipes NPS 12 (DN 300) and smaller have outside diameters numerically larger than their corresponding nominal sizes. Pipes NPS 14 (DN 350) and larger have outside diameter numerically equal to the corresponding nominal sizes. Pipes conforming to ASME B36.19M may be furnished with plain ends (PE), butt welding ends (BW), threaded ends, and grooved ends.

Wall Thicknesses & Weights

There are 4 schedule designations for stainless steel pipes conforming to ASME B36.19M: SCH 5S, SCH 10S, SCH 40S, SCH 80S. The nominal wall thicknesses for NPS 14 (DN 350) to NPS 22 (DN 550), inclusive, of SCH 10S; NPS 12 (DN 300) of SCH 40S; and NPS 10 and NPS 12 (DN 250 and DN 300) of SCH 80S are not the same as those of ASME B36.10M. The suffix “S” in the schedule number is used to differentiate B36.19M pipe from B36.10 pipe. The selection of wall thickness for a particular application shall be in conformance to relevant requirements prescribed by ASME Boiler and Pressure Vessel Codes or ASME B31 Codes.

The nominal weights (masses) of stainless steel pipe can be calculated using the following two formulas (if the formulas are applied to non-ferrous materials other than steel such as titanium, zirconium, or copper alloy, distinctive rectification factor shall be multiplied for each):

  • Wt = 10.69 ( D – t ) t; Wt: weight of pipe in lb/ft; D: outside diameter of pipe in inch; t: wall thickness in inch.
  • Wt’ = 0.0246615 ( D – t ) t; Wt’: weight of pipe in kg/m; D: outside diameter of pipe in mm; t: wall thickness in mm.

NPS
(DN)		SCH
No.		O.D
inch
mm		W.T
inch
mm		Mass
lb/ft
kg/m
1/8
6		5S0.405
10.3		......
1/8
6		10S0.405
10.3		0.049
1.24		0.19
0.28
1/8
6		40S0.405
10.3		0.068
1.73		0.24
0.37
1/8
6		80S0.405
10.3		0.095
2.41		0.31
0.47
1/4
8		5S0.540
13.7		......
1/4
8		10S0.540
13.7		0.065
1.65		0.33
0.49
1/4
8		40S0.540
13.7		0.088
2.24		0.43
0.63
1/4
8		80S0.540
13.7		0.119
3.02
0.54
0.80
3/8
10		5S0.675
17.1		......
3/8
10		10S0.675
17.1		0.065
1.65		0.42
0.63
3/8
10		40S0.675
17.1		0.091
2.31		0.57
0.84
3/8
10		80S0.675
17.1		0.126
3.20		0.74
1.10
1/2
15		5S0.840
21.3		0.065
1.65		0.54
0.80
1/2
15		10S0.840
21.3		0.083
2.11		0.67
1.00
1/2
15		40S0.840
21.3		0.109
2.77		0.85
1.27
1/2
15		80S0.840
21.3		0.147
3.73		1.09
1.62
3/4
20		5S1.050
26.7		0.065
1.65		0.68
1.02
3/4
20		10S1.050
26.7		0.083
2.11		0.86
1.28
3/4
20		40S1.050
26.7		0.113
2.87		1.13
1.69
3/4
20		80S1.050
26.7		0.154
3.91		1.48
2.20
1
25		5S1.315
33.4		0.065
1.65		0.68
1.02
1
25		10S1.315
33.4		0.083
2.11		0.86
1.28
1
25		40S1.315
33.4		0.133
3.38		1.68
2.50
1
25		80S1.315
33.4		0.179
4.55		2.17
3.24
1-1/4
32		5S1.660
42.2		0.065
1.65		1.11
1.65
1-1/4
32		10S1.660
42.2		0.109
2.77		1.81
2.69
1-1/4
32		40S1.660
42.2		0.140
3.56		2.27
3.39
1-1/4
32		80S1.660
42.2		0.191
4.85		3.00
4.47
1-1/2
40		5S1.900
48.3		0.065
1.65		1.28
1.90
1-1/2
40		10S1.900
48.3		0.109
2.77		2.09
3.11
1-1/2
40		40S1.900
48.3		0.145
3.68		2.72
4.05
1-1/2
40		80S1.900
48.3		0.200
5.08		3.63
5.41
2
50		5S2.375
60.3		0.065
1.65		1.61
2.39
2
50		10S2.375
60.3		0.109
2.77		2.64
3.93
2
50		40S2.375
60.3		0.154
3.91		3.66
5.44
2
50		80S2.375
60.3		0.218
5.54		5.03
7.48
2-1/2
65		5S2.875
73		0.083
2.11		2.48
3.69
2-1/2
65		10S2.875
73		0.120
3.05		3.53
5.26
2-1/2
65		40S2.875
73		0.203
5.16		5.80
8.63
2-1/2
65		80S2.875
73		0.276
7.01
7.67
11.41
3
80		5S3.500
88.9		0.083
2.11		3.03
4.52
3
80		10S3.500
88.9		0.120
3.05		4.34
6.46
3
80		40S3.500
88.9		0.216
5.49		7.58
11.29
3
80		80S3.500
88.9		0.300
7.62		10.26
15.27
3-1/2
90		5S4.000
101.6		0.083
2.11		3.48
5.18
3-1/2
90		10S4.000
101.6		0.120
3.05		4.98
7.41
3-1/2
90		40S4.000
101.6		0.226
5.74		9.12
13.57
3-1/2
90		80S4.000
101.6		0.318
8.08		12.52
18.64
4
100		5S4.500
114.3		0.083
2.11		3.92
5.84
4
100		10S4.500
114.3		0.120
3.05		5.62
8.37
4
100		40S4.500
114.3		0.237
6.02		10.80
16.08
4
100		80S4.500
114.3		0.337
8.56		15.00
22.32
5
125		5S5.563
141.3		0.109
2.77		6.36
9.46
5
125		10S5.563
141.3		0.134
3.40		7.78
11.56
5
125		40S5.563
141.3		0.258
6.55		14.63
21.77
5
125		80S5.563
141.3		0.375
9.53		20.80
30.97
6
150		5S6.625
168.3		0.109
2.77		7.59
11.31
6
150		10S6.625
168.3		0.134
3.40		9.30
13.83
6
150		40S6.625
168.3		0.280
7.11		18.99
28.26
6
150		80S6.625
168.3		0.432
10.97		28.60
42.56
*Dimensions and weights for 1/8″ to 6″ pipe, in both US Customary and SI metric units.

NPS
(DN)		SCH
No.		O.D
inch
mm		W.T
inch
mm		Mass
lb/ft
kg/m
8
200		5S8.625
219.1		0.109
2.77
9.92
14.78
8
200		10S8.625
219.1		0.148
3.76		13.41
19.97
8
200		40S8.625
219.1		0.322
8.18		28.58
42.55
8
200		80S8.625
219.1		0.500
12.70		43.43
64.64
10
250		5S10.750
273.0		0.134
3.40		15.21
22.61
10
250		10S10.750
273.0		0.165
4.19		18.67
27.78
10
250		40S10.750
273.0		0.365
9.27		40.52
60.29
10
250		80S10.750
273.0		0.500
12.70		54.79
81.53
12
300		5S12.750
323.8		0.156
3.96		21.00
31.24
12
300		10S12.750
323.8		0.180
4.57		24.19
35.98
12
300		40S12.750
323.8		0.375
9.53		49.61
73.86
12
300		80S12.750
323.8		0.500
12.70		65.48
97.44
14
350		5S14.000
355.6		0.156
3.96		23.09
34.34
14
350		10S14.000
355.6		0.188
4.78		27.76
41.36
14
350		40S14.000
355.6		0.375
9.53		54.62
81.33
14
350		80S14.000
355.6		0.500
12.70		72.16
41.56
16
400		5S16.000
406.4		0.165
4.19		27.93
41.56
16
400		10S16.000
406.4		0.188
4.78		31.78
47.34
16
400		40S16.000
406.4		0.375
9.53		62.64
93.27
16
400		80S16.000
406.4		0.500
12.70		82.85
123.31
18
450		5S18.000
457		0.165
4.19		31.46
46.79
18
450		10S18.000
457		0.188
4.78		35.80
53.31
18
450		40S18.000
457		0.375
9.53		70.65
...
18
450		80S18.000
457		0.500
12.70		93.54
...
20
500		5S20.000
508		0.188
4.78		39.82
59.32
20
500		10S20.000
508		0.218
5.54		46.10
68.65
20
500		40S20.000
508		0.375
9.53		78.67
117.15
20
500		80S20.000
508		0.500
12.70		104.23
155.13
22
550		5S22.000
559		0.188
4.78		43.84
65.33
22
550		10S22.000
559		0.218
5.54		50.76
75.62
22
550		40S22.000
559		......
22
550		80S22.000
559		......
24
600		5S24.000
610		0.218
5.54		55.42
82.58
24
600		10S24.000
610		0.250
6.35		63.47
141.12
24
600		40S24.000
610		0.375
9.53		94.71
141.12
24
600		80S24.000
610		0.500
12.70		125.61
187.07
30
750		5S30.000
762		0.250
6.35		79.51
118.34
30
750		10S30.000
762		0.312
7.92		99.02
147.29
30
750		40S30.000
762		......
30
750		80S30.000
762		......
*Dimensions and weights for 8″ to 30″ pipe, in both US Customary and SI metric units.

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