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Pipe Thickness Calculator ASME B31.1

by | Apr 25, 2020 | Piping

Pressure (P,psi)Outside Dia. (Do,mm)Max. Stress (S,psi)Joint Efficiency (E)Weld Reduction Factor (W)Thickness Coefficient (y)Corrosion Allowance (CA,mm)Mill Tollerance (MT,%)Min. Wall Thickness (tm,mm)Do/tm
30026013.7110.4212.5
5020013110.4012.5
150114.3150110.4112.5
346240678110.4012.5
1000016856667110.4012.5
1000016856667110.4012.5
15000168385000110.4012.5
1500016885000110.4012.5
1500016885000110.4312.5
652.7323.8517495110.400
1450.3833.435000110.4312.5
12.51000800.9510.4012.5
2219121932000110.4312.5
44.1168.310.8110.41.6012.5
7500141.333350110.4012.5
75012.572000110.4012.5
2342.3521.3420110.4012.5
174.04528528114.30110.400
174.04528528114.30110.41.612.5
174.045114.317100110.41.612.5
2654.1906005406.4016300110.400
2654.1906005406.416300110.4012.5
2400038.1155000111012.5
2400038.1145000111112.5
103021917099110.41.612.5
435013.15000110.4012.5
453013.19000110.4012.5
1727335009110.41.612.5
333.527335009110.41.612.5
333.527335009.172110.41.52412.5
210.25219.115600110.4012.5
210.25219.115600110.4012.5
652.6733.494000.810.4012.5

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Notes:

  1. According to ASME B31.1:2018 (104.1.2)
  2. Table for Maximum Allowable Stress Values in Tension, ksi, for Metal Temperature, °F, (Not Exceeding)
  3. SMTS – Specified Minimum Tensile Strenght 
  4. SMYS – Specified Minimum Yield Strenght 
  5. LWJE [E] – Longitudinal Weld Joint Efficiency factor ( Table 102.4.3-1)
  6. [F] – Casting Factor
  7. LWSR [W] – Longitudinal Weld Strength Reduction factor (Table 102.4.7- 1)
  8. WTC [y] – Wall Thickness Coefficient, valid only for cases [Do/tm >6], (Table 104.1.2-1)