Pipe Thickness Calculator ASME B31.1
| 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 |
|---|---|---|---|---|---|---|---|---|---|
| 300 | 260 | 13.7 | 1 | 1 | 0.4 | 2 | 12.5 |
Notes:
- According to ASME B31.1:2018 (104.1.2)
- Table for Maximum Allowable Stress Values in Tension, ksi, for Metal Temperature, °F, (Not Exceeding)
- SMTS – Specified Minimum Tensile Strenght
- SMYS – Specified Minimum Yield Strenght
- LWJE [E] – Longitudinal Weld Joint Efficiency factor ( Table 102.4.3-1)
- [F] – Casting Factor
- LWSR [W] – Longitudinal Weld Strength Reduction factor (Table 102.4.7- 1)
- WTC [y] – Wall Thickness Coefficient, valid only for cases [Do/tm >6], (Table 104.1.2-1)