Collapsed Tubing

Collapsed Tubing Dimensions

When tubing collapses, sometimes you need a ballpark dimension to try and figure out what might be ‘looking up’ at you.

Just take the (ID x Pi /2) + (OD-ID)
2.441 * 3.1416 / 2 + (2.875-2.441)
7.6686 / 2 + (.434)
3.8343 + .434 = 4.2683 Inches

A slightly more complicated way involves using the outside circumference:
(((OD*Pi) – (OD-ID)*Pi  )/2 ) + (OD – ID)
((Circumference of Tubing – Circumference of Total Wall Thickness) / 2) + Wall Thickness
(((2.875 x 3.1416) – (2.875-2.441)*3.1416)/2) + (2.875-2.441)
(9.0321 – (.434*3.1416)) / 2) + .434
((9.0321 – 1.3635) / 2) + .434
(7.6686 / 2) + .434 = 4.2683

So… just over 4-1/2″
[This is if the tubing hypothetically flattens absolutely flat, which is not the case .. It does give a good estimate for selection of washpipe or other overshot / grapple tools needed to fish collapsed tubing.]