We buy units other dealers reject, and the most common category is "crushed cage". I had a working assumption that these were low-value salvage. The data says something more interesting.
What we checked
Three years of intake, 14,200 units, each with an intake condition note for the cage and an independent post-wash assessment of the bottle. The two assessments are made by different people at different stations, which makes the comparison worth something.
| Cage condition at intake | Bottle sound | Bottle crazed | Bottle cracked |
|---|---|---|---|
| Visible impact damage (bowed or kinked uprights) | 71% | 21% | 8% |
| Cosmetically sound, weathered | 58% | 36% | 6% |
| Cosmetically good, recent | 84% | 12% | 4% |
| Cracked weld at a joint | 66% | 26% | 8% |
Bottle condition by cage condition at intake, n = 14,200
Why the impact-damaged column is high
Because the cage is a crumple zone and it works. A forklift mast, a dock plate or a dropped load delivers energy into the steel, the steel deforms, and the deformation absorbs the energy. The bottle inside experiences a fraction of it.
So a bowed upright is frequently evidence that an impact happened and the bottle was protected from it. The damage you can see is the record of damage that did not reach the plastic.
There is an engineering reason this works so well. Steel tube deforming plastically absorbs energy over a long stroke at roughly constant force, which is exactly the behaviour you want in an impact structure. HDPE under sudden load is comparatively brittle at low temperature and stores energy elastically rather than absorbing it. Putting the ductile material outside the brittle one is correct design, whether or not it was designed for that.
A bent cage is not a sign the unit was abused. It is a sign the cage did its job.
The weathered column is the one to worry about
The row that should change how people buy is the second one. A unit with a cosmetically sound but weathered cage — no impact damage, just time outdoors — has a crazed bottle 36% of the time, which is three times the rate of a recent unit.
That is UV. The cage looks fine because galvanised steel weathers gracefully. The bottle does not, and crazing is hard to see through a cage in daylight. These are the units that look like a bargain and are not.
The practical test is a torch held inside the bottle through the 6-inch lid, with the outside shaded. Crazing shows as a fine crackled pattern in transmitted light that is close to invisible in reflected light. Thirty seconds, and it is the difference between a container and a rebottling job.
If you are buying used and the cage looks tired rather than damaged, do that before you commit. The seventeen-point sequence is on our buying checklist.
Why we pay for crushed-cage units
Combine the two findings and the commercial logic is clear. An impact-damaged unit has a 71% chance of a sound bottle, and its cage is either pressable or scrap steel with a market value.
| Finding | Share | Outcome |
|---|---|---|
| Bottle sound, upright bowed | 52% | Press cage straight, recondition, resell |
| Bottle sound, upright kinked or weld cracked | 19% | Bottle reused in a salvaged cage; damaged cage baled |
| Bottle crazed, cage pressable | 18% | Rebottle — our ideal intake |
| Bottle crazed, cage terminal | 3% | Both streams to recovery |
| Bottle cracked | 8% | Bottle granulated; cage assessed separately |
What we do with impact-damaged intake
Roughly 89% of that intake produces either a container or a usable cage. Dealers who decline these units are declining a category where the economics are better than the appearance suggests.
What it is worth
Concretely, so you can judge any offer you are given.
| Condition | Paid per unit | Our route |
|---|---|---|
| Sound bottle, bowed upright | $38 – $72 | Press and recondition |
| Sound bottle, kinked upright | $26 – $48 | Bottle into a salvaged cage |
| Crazed bottle, pressable cage | $22 – $44 | Rebottle |
| Crazed bottle, terminal cage | By weight | Granulate and bale |
| Cracked bottle, sound cage | $22 – $44 | Rebottle |
| Bare cage, straightenable | $14 – $30 | Straighten and sell or rebottle |
What we pay for damaged intake, 275-gallon
Compare that with a general scrap bid on the same units, which is typically weight-based and lands around a third of these figures for the resaleable categories.
What this means if you are holding damaged units
- Do not scrap them on appearance. Send a photograph of one upright-to-rail weld joint and one base fixing point.
- Keep them out of the sun while they wait. The cage damage is done; the UV damage is still accumulating.
- Separate obvious bottle failures (visible splits, weeping) from cage damage. They price differently.
- Ask about rebottling before you ask about scrap. A crazed bottle in a pressable cage is worth several times its material value.
Written by
Priya Raghunathan
Head of reconditioning
Runs the three wash lines and the test bay. Has rejected more totes than anyone else in the building, which is the point of the job.