Aluminum Sample & Production Acceptance Guide
Keep sample identity, drawing evidence, deviations and production release decisions traceable.
Start with the purchase requirement
A good-looking trial piece is useful for discussion, but it does not by itself establish material identity, dimensional conformity, finish acceptance or permission to start production. Define what the trial represents and what evidence is required before reviewing it. Keep the authorized decision separate from a checklist completion count. This guide organizes procurement records; it does not supply a universal sampling plan or approve engineering requirements.
Understand the material or process
Hydro notes that extrusion tolerances depend on factors including profile design, wall thickness and alloy. Its machining overview also distinguishes work before and after surface treatment. Use the applicable drawing and specification to determine what must be inspected and at which supplied stage. The review sequence below is AlumHome editorial guidance rather than a standards-based certification procedure.
What to compare
| Review stage | Record to retain | Decision or follow-up |
|---|---|---|
| Before the trial | Drawing revision, supplied scope, material and required evidence. | Assign the reviewer and resolve what the sample must demonstrate. |
| Sample receipt | Supplier, sample / lot reference, quantity and supplied condition. | Identify missing records or differences from the planned trial. |
| Technical review | Relevant material, dimensional, finish and interface evidence. | Record actual findings against the agreed requirements. |
| Deviation review | Affected feature, evidence reference and supplier response. | Assign an owner and record the authorized disposition. |
| Production release | Accepted revision, conditions, remaining actions and decision reference. | Obtain the separate decision under the project process. |
| Production receipt | Shipment / lot identity, required documents and receiving findings. | Apply the agreed production acceptance and follow-up process. |
Plan the trial before the supplier makes it
Agree sample quantity, drawing revision, material condition, operations and finish scope. State which features or interfaces are to be reviewed and which documents should accompany the sample. Identify the responsible reviewer and the route for clarifying gaps. If a trial is intended only to show appearance, record that narrow scope; do not later treat it as proof of dimensional or structural compliance. Keep any untested requirement visible.
Identify the actual sample and evidence
Label the review with the project or part reference, supplier, sample identifier and receipt date. Note whether the sample is a full length, cut member, machined part or complete assembly. Match the reports to that supplied scope and revision. Record material-document references and the relevant lot or batch identifiers. Unrelated test reports, catalog examples and unlabelled photos should not be recorded as evidence for the actual delivered sample.
Review the final supplied condition
Use the controlled drawing and applicable specification to determine the required checks. Include relevant dimensional reports, finish references and mating or assembly observations. Record whether the checks concern material before finishing or the finished item; do not assume the two stages are interchangeable. Where a required measurement or document is unavailable, state the gap and the next action. The buyer checklist records evidence status and does not assess whether the underlying document is valid.
Keep deviations separate from acceptance
For each discrepancy, identify the affected feature or requirement, evidence reference, supplier explanation, responsible owner and proposed correction or disposition. Distinguish a correction request from an accepted concession under the project process. Record whether a new sample, report or drawing review is needed. An email saying "looks fine" without identifying the part, revision and accepted scope leaves repeat orders exposed to ambiguity.
Issue a separate production release record
Retain the authorized reviewer, decision date, reference and conditions of release. Link it to the accepted drawing, material and finish requirements. Identify remaining actions and their effect on production or shipment; a checklist filled with references is not itself authorization. Inform the supplier through the agreed company communication route and retain its actual acknowledgement. AlumHome tools prepare local notes and do not issue approvals or send messages.
Check production and changed repeat orders
Agree lot identification, required shipment documents, packing and receiving checks for production. A trial decision does not establish every later batch without the agreed production controls. Record changes to material, drawing, process, operation site or finish and ask whether additional review is required. On receipt, link findings and follow-up actions to the actual shipment. Confirm the production acceptance process with the responsible quality and design personnel rather than inventing a sampling percentage.
An example of a limited sample decision
A supplier sends an unfinished extrusion sample while the order calls for cut, drilled and coated members. Record that the sample covers the extrusion stage only. It may support discussion of the section, but it does not establish finished-hole positions, coating appearance or final fit. Request the remaining evidence or representative finished samples, then retain the decision for each scope before releasing production.
Build your procurement checklist
- Part / project reference, accepted drawing and revision
- Record the controlled requirement, supplier proposal or unresolved question for this item.
- Material condition and document / lot references
- Record the controlled requirement, supplier proposal or unresolved question for this item.
- Sample identity, supplied scope and receipt date
- Record the controlled requirement, supplier proposal or unresolved question for this item.
- Dimensional, finish and interface evidence references
- Record the controlled requirement, supplier proposal or unresolved question for this item.
- Open deviations, owners, actions and due dates
- Record the controlled requirement, supplier proposal or unresolved question for this item.
- Authorized review decision reference and conditions
- Record the controlled requirement, supplier proposal or unresolved question for this item.
- Production lot documents, receiving checks and change-review needs
- Record the controlled requirement, supplier proposal or unresolved question for this item.
Continue from the requirement
Research supplier scope and source evidence, then confirm the exact material, operations and current commercial terms. The inquiry center prepares a draft addressed to Tony; it does not automatically send requests to directory companies. Add the downloaded checklist and drawings manually. Record a real acknowledgement separately from opening an email link.
Buyer questions
Does completing a checklist authorize production?
No. The project requires a separate decision by the responsible authorized reviewer.
Does accepting one sample accept every production batch?
Use the agreed production inspection and acceptance plan. Keep lot evidence and changes traceable.
Can an unfinished extrusion represent a coated machined part?
Record what the sample actually covers and request the missing finished-scope evidence before acceptance.
What sampling percentage should I use?
Have the responsible parties define the sampling and inspection requirements for the order. This guide does not set a universal percentage.
Sources and review scope
Hydro: factors affecting profile tolerances · Hydro: machining before or after treatment
Primary sources reviewed 3 October 2026. The comparison tables, examples and procurement checklists are AlumHome editorial guidance. Source organizations do not endorse these pages or linked suppliers. Use the applicable product documents and responsible design review for order acceptance.