Purchasing & Quality / Purchasing guide
A clear revision process tells everyone which definition is current and when a change takes effect. Part names alone are not enough, especially when several similar files circulate during development. Link the purchase order, drawing, model and inspection requirements to one controlled release before manufacturing starts.
Catalogue reference image. Confirm the quoted configuration against the agreed drawing.
Create a release index
List the governing file names, part numbers, revisions and units in the enquiry or order package. Mark obsolete files as superseded rather than leaving them beside current files without explanation. If a model and drawing are both supplied, state which governs a conflict and resolve known discrepancies before release.
Define the change cut-in
When the design changes, identify the affected parts and ask the supplier to confirm the status of work already started. Record whether the change applies to open work, a later batch or both. Avoid relying on a message such as “use the latest file” when more than one revision may be present.
Verify what was delivered
Require the delivered part and inspection documents to identify the applicable revision. At receiving, compare that identification with the order. If a deviation was approved, attach its reference and scope so the receiving team does not mistake it for an undocumented error.
Information to include in your enquiry
| Review item | Information to provide |
|---|---|
| Release index | Governing files and revisions |
| Precedence | Rule for model/drawing conflicts |
| Cut-in | Affected work and effective batch |
| Receiving | Revision and deviation references on documents |
Frequently asked questions
Can the same file name be reused for every revision?
It creates avoidable ambiguity. Use a controlled revision identifier and a clear release record.
Should an approved deviation change every future order?
Only if its documented scope says so. Otherwise keep it limited to the approved situation.
Discuss your carbon fiber component
Send your drawing revision, intended application, quantity and acceptance requirements to Litian Yunde for a project review.