←
Corrosion Allowance — Wall Section 3D
MATERIALS 8a · UNIFORM THINNING vs ONE PIT · DRAG ROTATE
Pipe wall
Bore (receding)
t_min 2.41 mm
CA spent 3.0 mm
Pit / leak jet
UT grid points
Shoe / beam
Plinth / grade
YEAR IN SERVICE
UT grid average
Thinnest wall
6″ Sch 40 · t₀ 6.22 · t_min 2.41 · CA 3.0 mm · general 0.15, pit 1.80 mm/yr. Wall exaggerated ≈6×.
· Educational teaching tool — simplified and illustrative. Not for engineering design use.
Fit
Uniform
Pitting
t_min marks
Outside view
Play