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Case Study: Expansion Tank Supply for a national parts importer in West Africa

Source:Case / Time:2026-09-18

Expansion Tank for A national parts importer in West Africa

A national parts importer came to us with a expansion tank programme for West Africa. The brief was ordinary and unforgiving at the same time: a fixed launch window, a landed cost that had to survive freight and duty, and a part that had to match an existing sample. This case records what was specified, what went wrong in sampling and how the bulk order landed.

The starting point

  • Packing that arrived crushed at the port
  • Lead time that slipped twice before bulk started
  • Warranty claims traced back to a single lot

Expansion Tank case study

What was specified

PartExpansion Tank
ClientA national parts importer
MarketWest Africa
Volume2,000 pieces across 4 specifications
Base materialPU Leather
Sampling rounds2
Delivery window6 weeks from PO to ex-factory
ComplianceTUV

How it was resolved

  1. The specification was rebuilt around PU Leather and the tolerance locked before bulk.
  2. A pre-production sample was approved and kept as the golden reference.
  3. Production ran with in-line inspection and a mid-run photo report.
  4. Cartons were packed to the client's own barcode and ratio specification.
  5. Documentation shipped with the goods instead of after them.

Expansion Tank production run

Result

  • 2,000 pieces delivered inside the 6-week window.
  • Unit cost held within 1.5% of the original quotation.
  • Inspection-related rejection stayed under 2.0%.
  • The specification is on file, so reorders reproduce the approved sample.

What we would repeat

Lock the material standard before sampling. Once the base changes, every downstream approval has to be redone and the calendar slips.

Planning something similar?

Share a sample or a drawing and we will quote against a written specification, not against a photograph.

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