Rebottling
service.
Quantity and format are what we need. If your cages are a mix of 275 and 330, say so — they run as separate batches.
Send us your cages; we return them with brand-new virgin HDPE bottles fitted. $185–$245 per unit for 275 and 330 gallon formats, ten to fifteen business days, including teardown, weld inspection, jig straightening, abrasive blast, zinc-rich recoat, new bottle, new valve, new cap, new gasket and an air-hold pressure test. About one cage in seven is rejected and credited as steel.
The argument in one paragraph
Roughly 70% of the embodied carbon in an IBC sits in the steel, not the plastic — smelting, galvanising, tube-forming and welding are all energy-hungry, while blow-moulding a bottle is comparatively cheap. So when a bottle is compromised and the frame is fine, scrapping the frame to get a clean bottle throws away the expensive 70% to replace the cheap 30%. Rebottling inverts that: replace the 30%, keep the 70%. About 54 lb of CO₂e avoided per unit against buying new.
What happens to your cages
- Teardown. Old bottle removed, cut down and sent to our regrind stream. Valve, cap and gasket discarded or recovered as parts.
- Weld and geometry inspection. Every weld visually checked, diagonals measured for square, base frame checked for flatness on a surface plate.
- Jig straightening. Out-of-true frames pressed back on a jig. The ones that will not come back are rejected here.
- Abrasive blast. Down to bare metal. This is the step most reconditioners skip, and it is why their cages rust through in three years.
- Zinc-rich recoat. Zinc-rich primer plus topcoat, so galvanic protection is restored rather than painted over.
- New bottle fitted. Virgin HDPE from FDA-compliant resin, new gasket, new valve, new cap.
- Air-hold test and plate. Pressure tested, then marked with the rebottle date and batch reference.
What rebottling does not give you
A UN rating. A 31HA1 marking certifies a specific bottle-and-cage combination tested as an assembly within a validity window, so a rebottled unit is not UN-rated unless it has been re-tested and re-plated. If you are offering regulated liquids for transport, tell us at enquiry and we will quote a compliant path — which may well mean new units.
Pooled or dedicated
Pooled is the default and the cheaper option: your 100 cages go into the batch flow and you get 100 rebottled units back. Dedicated keeps your serials together and returns your own frames, which matters if you run unit-level traceability. It adds about $18 per unit because it interrupts batching.
Pricing & lead time
| Item | Detail |
|---|---|
| 275 gal, pooled | $185 per unit |
| 330 gal, pooled | $215 per unit |
| Dedicated batch | +$18 per unit |
| 550 gal / oversize | Quoted; 3–5 week bottle lead |
| Cage rejected | Credited at steel scrap value |
| Lead time | 10 – 15 business days |
| Minimum | 12 units |
Cage rejection reasons
- Bent lower horizontals (forklift strike)
- Broken base-frame corner welds
- Diagonals out of square beyond jig recovery
- Base frame not flat — will rock when loaded
- Corrosion through the tube wall
Roughly one in seven. We would rather reject a frame than send you a unit that chafes a new bottle.
Rebottling questions
Is rebottling cheaper than buying replacements?
Usually, yes. Rebottling your own cages runs $185–$245 per unit including the new bottle, valve, cap and gasket. Buying a rebottled unit outright from stock is $340–$430, and buying new is $520–$690. If you already own the cages and they are structurally sound, rebottling is the cheapest route to a never-filled contact surface by a wide margin.
What proportion of cages fail inspection?
About one in seven, in our experience. The usual causes are bent lower horizontals from forklift strikes, broken welds at the base-frame corners, and frames that have been racked out of square far enough that they will chafe a new bottle. We reject those rather than force them, and we credit you the steel scrap value.
Do I get my own cages back?
If you need unit-level traceability, yes — we run a dedicated batch, keep your serials together and return your own frames. It costs about $18 more per unit because it breaks our batch flow. Most customers do not need it and take the pooled option, where you send 100 cages and get 100 rebottled units back.
Can you rebottle a 330 or a 550?
330 gallon, yes, routinely. 550 gallon and other oversize formats depend on bottle availability — those bladders are not stocked in the same depth and lead times run three to five weeks. Tell us the format early.
Seven stages, with the reject criteria
- Teardown. Old bottle removed, cut down and routed to the regrind stream. Valve, cap and gasket discarded, or recovered as reclaimed parts where the seat is sound — about 15% are.
- Weld and geometry inspection. Every weld visually checked, diagonals measured corner to corner across the top frame in both directions, base frame checked for flatness on a surface plate.
- Jig straightening, or rejection. Out-of-true frames pressed back on a jig. Roughly one in seven is rejected here rather than forced, and credited to you at steel scrap value.
- Abrasive blast to bare metal. The step most reconditioners skip, and the reason their cages rust through in three years. Painting over a breached galvanised coating is cosmetic.
- Zinc-rich recoat. Zinc-rich primer plus topcoat, restoring sacrificial galvanic protection rather than hiding its absence.
- New bottle and hardware. Virgin HDPE from FDA-compliant resin, new gasket, new valve, new cap — valve type and thread to your order.
- Air-hold test and date mark. 3 psi timed hold, then marked with the rebottle date and batch reference so there is no ambiguity about what happened to the unit.
| Finding | Measurement | Recoverable? | Outcome |
|---|---|---|---|
| Bent lower horizontal | Straight edge; over ¼ in deviation | Usually | Pressed, rebottled |
| Racked diagonals under 1.5 in | Corner to corner, both ways | Usually | Pressed, rebottled |
| Racked diagonals over 1.5 in | Same | No — tube has yielded | Steel scrap, credited |
| Broken base-frame corner weld | Visual plus load check | No — we do not weld-repair for resale | Steel scrap, credited |
| Base frame not flat | Surface plate; any rock fails | Sometimes | Jig attempt, then scrap |
| Corrosion through tube wall | Hammer-tapped, probed with a scriber | No | Steel scrap, credited |
Pooled against dedicated, and what each really costs
| Option | Price per unit | Lead time | When to choose it |
|---|---|---|---|
| 275 gal, pooled | $185 | 10 – 15 business days | Default. You send 100 cages, you get 100 units back |
| 330 gal, pooled | $215 | 12 – 18 business days | Same, scarcer bladder |
| 275 gal, dedicated batch | $203 | 15 – 20 business days | Only where unit-level traceability is genuinely required |
| 550 gal / oversize | Quoted | 3 – 5 weeks bottle lead | Tell us the format early |
| Valve upgrade to full-port ball | +$12 | — | Frequent cycling duty |
| Camlock outlet fitted | +$13 | — | Connected and disconnected daily |
| Vented cap instead of solid | +$6 | — | Anything that off-gasses or lives outdoors |
| UV sleeve fitted | +$38 | — | Outdoor service |
| Cage rejected at inspection | Credited at steel scrap value | — | Roughly one in seven |
Why dedicated costs more than the surcharge suggests
We originally priced dedicated batches at about $18 a unit on the assumption that it was a bookkeeping difference. It is not — a dedicated fleet breaks batch flow at every stage: wash cycles are batched by residue class, yard staging needs separate positions per customer, collections cannot be consolidated as freely, and a damaged unit cannot simply be swapped from stock.
The real cost is closer to double that, and we have repriced it. We also now ask harder about why traceability is needed, because in roughly half the cases we see, the audit requirement was for a documented wash certificate per turn — which pooled units provide perfectly well.
Against the alternatives
| Route | Cost per unit | You must already own |
|---|---|---|
| Rebottle your own cages | $185 – $215 | Sound cages |
| Buy rebottled from stock | $340 – $430 | Nothing |
| Buy new | $520 – $690 | Nothing |
Rebottling your own frames is therefore cheaper than buying a used Grade A unit outright, and roughly a third of the cost of new. If you own a tote fleet, you almost certainly own sound cages with dead bottles — and most operations have never been offered the option.
Detailed questions
Does rebottling restore the UN rating?
No. A UN 31HA1/Y marking certifies a specific bottle-and-cage combination tested together as an assembly. Change the bottle and you have a combination that has never been drop, hydraulic or stack tested in that configuration. It can be re-tested and re-plated, which is a service rather than a default — tell us at enquiry if you are offering regulated liquids for transport.
How do I know the new bottle is genuinely new?
Because it arrives on a pallet from the moulder with a lot number, and the unit ships with a date mark and a batch reference tying it to that lot. If you want the resin compliance documentation, ask and we will include it.
Can you rebottle a cage I bought from somebody else?
Yes, any manufacturer's cage, provided it passes the inspection. We see frames from every major maker and the bladders are broadly interchangeable within a format. What matters is geometry and weld integrity, not whose badge is on it.
What if more than one in seven of my cages fail?
Then your fleet has been stored on wet ground or handled hard, and we will tell you before we start rather than after. If a sample of ten shows three or four failures we will say the economics do not work and quote you rebottled stock instead. Send photographs of a representative stack and we can usually predict the rate.
Is there a minimum?
Twelve units, which is about where the batch flow makes sense. Below that we will quote rebottled stock from our own inventory instead, which is more expensive per unit but has no setup inefficiency.
Can you rebottle and also wash the cages' pallet bases?
Base plates are inspected, repaired or swapped as part of the service — a cracked composite deck is a disqualifier and a reclaimed steel base is $28 of material. Washing a base is not meaningful; what matters is flatness and fork-pocket integrity.
How long does the new bottle last?
The same as any new bottle: six to eight service lives if kept out of direct sun and off wet ground. The limiting factor in a rebottled unit is usually the cage, which is why we decline to rebottle frames that already have two coatings on them — a nine-year-old cage has less remaining life than a fresh bladder deserves.
What is the environmental case in one line?
About 70% of an IBC's embodied carbon is in the steel. Rebottling replaces the compromised 30% and keeps the expensive 70%, avoiding roughly 54 lb of CO₂e per unit against new and keeping 80 lb of galvanised steel in service as an object rather than feedstock.
Have a yard full of good cages?
Send a photograph of the stack and a count. Rebottling your own frames is almost always the cheapest clean-bottle route.