Expansion Valve for Great Wall Poer: Carbon Steel
This expansion valve for the Great Wall Poer is specified around carbon 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 lead time that slipped twice before bulk started, or a supplier who changed material without saying so. Both are specification problems, and both are preventable.

Specification
| Product | Expansion Valve |
|---|---|
| Vehicle application | Great Wall Poer |
| Material / finish | Carbon Steel |
| Typical use | Off-Road Trails |
| MOQ | 3,000 pieces per specification |
| Sampling | 10 working days, 5 days per revision |
| Bulk lead time | 15-55 days after approval |
| Compliance | RoHS |
| Packing | 20 pieces per inner box, 200 per carton |
Material options
- High Density Foam — specified where the part sits close to a heat source
- Silicone — chosen where wear resistance comes first
- ABS Plastic — selected when the part is exposed to weather and road salt
- Stainless Steel — chosen where wear resistance comes first
- Chromed Steel — the cost-effective default for volume programmes

Processes available
- laser cutting
- rubber vulcanisation
- CNC machining
- anodising
- powder coating
- surface grinding
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 off-road trails. Related applications include rural transport, rental fleets, food delivery, mining sites, mountain roads.
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.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the RoHS-compliant build instead of a fresh interpretation.
Can you match an existing sample?
Send a sample and we will reverse-engineer the specification, then produce a counter sample for approval before any bulk starts.
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.
Ask for the current catalogue and the specification sheet for this line.







