Subcontract precision machining · Fenggang, Dongguan, China
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Quality & Inspection

The documentation list, the inspection methods, and the three things we will not do.

Quality

What we can prove, not what we claim.

Every supplier writes that quality is important. Very few write down what they will hand you with the parts. This page is that list.

Documentation with the batch

First-article inspection, material certificates and dimensional reports are issued with the parts as standard — not only when a customer asks.

First-article inspection

The first part of a run is measured in full against the drawing and reported before production continues.

Material certificates

Every material is bought with certificates and shipped with them on request.

Dimensional reports

Critical dimensions reported with actual measured values, not just pass or fail.

Traceability

Material heat number, machining route, operator and inspection record held against the job.

In-process control

Dimensional checks during the run, not only at the end — so drift is caught while there is still material to correct it.

Inspection

How parts are measured.

Three core instruments carry the dimensional work, backed by hand metrology on the shop floor. Instrument models are stated on request.

2D vision measuring

Non-contact measurement of profile, hole position and appearance. The fast check for plates, profiles and turned parts, and the one that does not touch the surface.

Coordinate measuring machine

3D inspection of position, form and geometric tolerances — used on complex parts and on the first article of every production run.

Hardness testing

Incoming material and heat-treated parts are checked for hardness, so it is confirmed rather than assumed.

Incoming material First article In process Final inspection Documents Heat number verified at goods-in. Measured in full, reported before the run continues. Checked mid-run, not only at the end of it. 2D vision, CMM and hardness. FAI, material certificate and dimensional report. Five checkpoints — and the record of them leaves with the parts.
These are the points where a part is measured. Nothing is assumed to be right because it looks right.

Reports issued as standard. First-article inspection report · material certificate · dimensional inspection report. If your sector requires a specific format or an additional test, tell us at quotation stage and we will confirm whether we can supply it.

Honesty

Three things we will not do.

Quote a tolerance we cannot hold

If your drawing asks for a value we cannot repeat across a run, we say so before you order rather than after you inspect.

Display a certification badge we cannot back up

We keep certification logos off this site. What we publish instead is documentation you can check against your own parts: first-article inspection reports, material certificates and dimensional records.

Show customer names without permission

Parts are shown with process, material and batch size. Never with a customer name.

If any of the statements on this page cannot be verified when you audit us, that is our problem to fix — tell us.

What gets measured

The features that are reported, not just eyeballed.

A bore that is on size but not round will still leak. A spline that is on centre by eye may not run true. The parts below are the kind where the report matters as much as the part — and both leave here together.

Send us a drawing. Get an engineering answer, not a price list.

Tell us the part, the material and the quantity. An engineer reviews your drawing and replies within one working day — usually with a suggestion on how to make it cheaper.