Expansion Tank for BYD F3: Powder Coated Steel
This expansion tank for the BYD F3 is specified around powder coated steel, which decides how it behaves in service far more than the part name does. We build to a written specification — base material, dimensions, finish and packing — and hold that specification on file so every reorder reproduces the approved piece.
The usual reason a programme changes supplier is not unit price. It is packing that arrived crushed at the port, or warranty claims traced back to a single lot. Both are specification problems, and both are preventable.

Specification
| Product | Expansion Tank |
|---|---|
| Vehicle application | BYD F3 |
| Material / finish | Powder Coated Steel |
| Typical use | Heavy Load Hauling |
| MOQ | 3,000 pieces per specification |
| Sampling | 10 working days, 5 days per revision |
| Bulk lead time | 25-55 days after approval |
| Compliance | ISO/TS 16949 |
| Packing | 50 pieces per inner box, 500 per carton |
Material options
- Cast Iron — chosen where wear resistance comes first
- PU Leather — specified where the part sits close to a heat source
- High Density Foam — chosen where wear resistance comes first
- Anodised Aluminium — specified where the part sits close to a heat source
- Nylon 66 — specified where the part sits close to a heat source

Processes available
- cold forging
- robot welding
- die casting
- assembly line testing
- precision stamping
- rubber vulcanisation
Fitment notes
Confirm the fitment against the VIN or the frame number before ordering; two model years often share a name and not a part.
Where it is used
The specification above is the one most often ordered for heavy load hauling. Related applications include rural transport, ride-hailing fleets, track days, construction sites, long-distance touring.
Quality and packing
- In-line inspection with AQL 4.0 sampling on every lot.
- Dimensional report issued against the approved drawing.
- Carton marking and barcode to your specification.
- Golden sample retained at the factory as the reorder reference.
Questions buyers ask
What is the minimum order quantity?
The standard MOQ is 3000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
What happens if a lot fails inspection?
The lot is re-inspected against the golden sample, and replacement pieces ship on the next available booking at our cost.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 3000 pieces per line.
How long does sampling take?
Samples leave the factory in 10 working days, and each revision round adds about 5 days once you have seen the first piece.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.







