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Pressure Ratings for Spiral Welded Pipe Mild Steel

DIA IN
MM		 DIA IN
INCHES		 WALL GUAGE
MM		 WEIGHT
KG/MTR		 MAX TEST
PRESSURE (MPA)		 SAFE WORKING
PRESSURE (MPA)
76 3 1.6 3.00 8.95 2.98
76 3 2.0 3.75 11.18 3.73
76
89 4 1.6 3.51 7.64 2.55
89 4 2.0 4.39 9.55 3.18
89
102 4 1.6 4.02 6.67 2.22
102 4 2.0 5.03 8.33 2.78
102 4 3.0 7.55 12.50 4.17
114 4 1.6 4.50 5.96 1.99
114 4 2.0 5.62 7.46 2.49
114
127 5 1.6 5.01 5.35 1.78
127 5 2.0 6.26 6.69 2.23
127 5 3.0 9.40 10.04 3.35
141 6 1.6 5.56 4.82 1.61
141 6 2.0 6.95 6.03 2.01
141 6 3.0 10.43 9.04 3.01
152 6 1.6 6.00 4.47 1.49
152 6 2.0 7.50 5.59 1.86
152 6 3.0 11.25 8.39 2.80
168 7 1.6 6.63 4.05 1.35
168 7 2.0 8.29 5.06 1.69
168 7 3.0 12.43 7.59 2.53
178 7 1.6 7.02 3.82 1.27
178 7 2.0 8.78 4.78 1.59
178 7 3.0 13.17 7.16 2.39
178
203 8 1.6 8.01 3.35 1.12
203 8 2.0 10.01 4.19 1.40
203 8 3.0 15.02 6.28 2.09
219 9 1.6 8.64 3.11 1.04
219 9 2.0 10.80 3.88 1.29
219 9 3.0 16.20 5.82 1.94
219
229 9 1.6 9.04 2.97 0.99
229 9 2.0 11.29 3.71 1.24
229 9 3.0 16.94 5.57 1.86
229 9 4.0 22.59 7.42 2.47
254 10 1.6 10.02 2.68 0.89
254 10 2.0 12.53 3.35 1.12
254 10 3.0 18.79 5.02 1.67
254 10 4.0 25.06 6.69 2.23
254
273 11 1.6 10.77 2.49 0.83
273 11 2.0 13.47 3.11 1.04
273 11 3.0 20.20 4.67 1.56
273 11 4.0 26.93 6.23 2.08
273 11 5.0 33.66 7.78 2.59
305 12 1.6 12.03 2.23 0.74
305 12 2.0 15.04 2.79 0.93
305 12 3.0 22.57 4.18 1.39
305 12 4.0 30.09 5.57 1.86
305
323 13 1.6 12.75 2.11 0.70
323 13 2.0 15.93 2.63 0.88
323 13 3.0 23.90 3.95 1.32
323 13 4.0 31.86 5.26 1.75
323
356 14 1.6 14.05 1.91 0.64
356 14 2.0 17.56 2.39 0.80
356 14 3.0 26.34 3.58 1.19
356 14 4.0 35.12 4.78 1.59
356
406 16 2.0 20.03 2.09 0.70
406 16 3.0 30.04 3.14 1.05
406 16 4.0 40.05 4.19 1.40
406 16 5.0 50.06 5.23 1.74
457 18 2.0 22.54 1.86 0.62
457 18 3.0 33.81 2.79 0.93
457 18 4.0 45.08 3.72 1.24
457 18 5.0 56.35 4.65 1.55
508 20 2.0 25.06 1.67 0.56
508 20 3.0 37.58 2.51 0.84
508 20 4.0 50.11 3.35 1.12
508 20 5.0 62.64 4.18 1.39
559 22 2.0 27.57 1.52 0.51
559 22 3.0 41.36 2.28 0.76
559 22 4.0 55.14 3.04 1.01
559 22 5.0 68.93 3.80 1.27
610 24 2.0 30.09 1.39 0.46
610 24 3.0 45.13 2.09 0.70
610 24 4.0 60.17 2.79 0.93
610 24 5.0 75.22 3.48 1.16
660 26 2.0 32.55 1.29 0.43
660 26 3.0 48.83 1.93 0.64
660 26 4.0 65.11 2.58 0.86
660 26 5.0 81.38 3.22 1.07
711 28 2.0 35.07 1.20 0.40
711 28 3.0 52.60 1.79 0.60
711 28 4.0 70.14 2.39 0.80
711 28 5.0 87.67 2.99 1.00
762 30 2.0 37.58 1.12 0.37
762 30 3.0 56.38 1.67 0.56
762 30 4.0 75.17 2.23 0.74
762 30 5.0 93.96 2.79 0.93
813 32 3.0 60.15 1.57 0.52
813 32 4.0 80.20 2.09 0.70
813 32 5.0 100.25 2.61 0.87
864 34 3.0 63.92 1.48 0.49
864 34 4.0 85.23 1.97 0.66
864 34 5.0 106.54 2.46 0.82
914 36 3.0 67.62 1.39 0.46
914 36 4.0 90.16 1.86 0.62
914 36 5.0 112.70 2.32 0.77
965 38 3.0 71.40 1.32 0.44
965 38 4.0 95.19 1.76 0.59
965 38 5.0 118.99 2.20 0.73
1016 40 3.0 75.17 1.25 0.42
1016 40 4.0 100.22 1.67 0.56
1016 40 5.0 125.28 2.09 0.70
1069 42 3.0 79.09 1.19 0.40
1069 42 4.0 105.45 1.59 0.53
1069 42 5.0 131.82 1.99 0.66
1118 44 3.0 82.71 1.14 0.38
1118 44 4.0 110.29 1.52 0.51
1118 44 5.0 137.86 1.90 0.63
1168 46 3.0 86.41 1.09 0.36
1168 46 4.0 115.22 1.46 0.49
1168 46 5.0 144.02 1.82 0.61
1219 48 3.0 90.19 1.05 0.35
1219 48 4.0 120.25 1.39 0.46
1219 48 5.0 150.31 1.74 0.58

Above figures are based on Ambient Temperatures up to 50deg C

Note1: Theoretical bursting pressures are calculated using Barlow's formula for thin walles pressure vessels incorporating weld joint efficiency factor of 0.85 as outlined in AS 4041.

P= (2 x ST / D) x 0.85 P= Pressure Rating (m.p.a.) S= Minimum Tensile Strength = 250 mpa T= Thickness (mm) D= Outside Diameter of Pipe (mm)

Note 2: Working Pressure: We have selected a factor of ' 3 ' for the above table. This can be adjusted to suit your needs.

Please note that this information is only to be used as a guide