Calculation of Thicknesses of Return Bends and Elbows
according to API standard 530
Attention!
This calculation is only a simplified estimation and does not replace a detailed design calculation.
Input data
Outside diameter of bend or elbow
D
o
mm
or
Inside diameter of bend or elbow
D
i
mm
Centre line radius
r
cl
mm
Corrosion allowance
δ
CA
mm
Design pressure
p
bar
Allowable stress
σ
el
N/mm²
Calculate
Results
Minimum required thickness:
at the inside radius
δ
σi
mm
at the outside radius
δ
σo
mm
along the neutral axis
δ
σn
mm
Outside diameter of bend or elbow
D
o
mm
Inside diameter of bend or elbow
D
i
mm
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