ISO 9001 audited mills · EN 10204 3.1 certificates sales@aluminumgrade.com WhatsApp +86-177-5175-5597
Home/How We Verify

Verification

The Mill Makes It. We Make It Verifiable.

Our value does not rest on owning a rolling line. It rests on six things we can show you on paper — and on being the one party that answers when something is wrong.

Six commitments

What We Put in Writing Before You Pay

Each of these is backed by a document you receive. If we cannot produce the document, the claim does not stay on this page.

1One order, however mixed the list

A real order is rarely one product. Foil from one line, plate from another, extrusions from a third, anodising from a fourth — we put them on one contract, one invoice and one shipment, so a 2 t line does not sit waiting until it fills a mill minimum.

Mixed-container packing list · one commercial invoice

2If it sits outside the range, we source it in

Requirements are rarely tidy. A custom temper, a fabricated bracket, a coated finish, a gauge no single mill will roll at your quantity — where an item falls outside what we hold, we buy it in through our supply network and deliver it under the same contract, with the same inspection and the same documents. You deal with one supplier from enquiry to arrival instead of assembling the chain yourself.

Sourced lines quoted as one item, one contract

3Our inspector stands on the production floor

For first orders and for any run above 20 t, our own QC is at the line for the thickness gauge check, surface inspection and packing supervision — not reading photographs sent to us afterwards. The checkpoint photographs reach you before the container is sealed, and the production status of your order can be asked for at any point between confirmation and loading.

Pre-loading photo set + inspection checklist

4Gauge and flatness measured before it leaves

Thickness is checked at nine points across the width, not one. Coil camber, sheet flatness and edge burr are recorded on a checklist that travels with the shipment.

Inspection checklist copy in every shipment file

5Certificates when your project needs them

EN 10204 3.1 with the heat analysis and mechanical results, EN 10204 2.2 where that is what your file requires, third-party inspection by SGS or BV, classification society approval for marine work. Tell us at enquiry which certificate your customer will accept and we confirm, before the order, exactly what will be issued with it.

Certificate type confirmed at quotation

6Payment terms that leave room

A 40% deposit to start, the balance before delivery. Beyond that the structure is open: L/C at sight, staged payments across a long programme, or a different split on a repeat order. If the standard terms do not fit how you are funded, say so at quotation and we will work something out.

40% deposit minimum · balance before delivery

The checklist

What Our Inspector Records on the Mill Floor

This checklist travels with every shipment file. For first orders and anything above 20 tonnes it is filled in by our own QC, physically present, not by the mill's export desk.

ItemMethodAcceptanceRecorded as
ThicknessMicrometer at nine points across the widthWithin the tolerance on your orderNine values on the checklist
Width & lengthTape measure, three positionsOrder toleranceThree values
SurfaceVisual under raking lightNo scratch, roller mark, oil stain or corrosionPhotographs
Flatness / camberStraightedge and feeler gaugePer ASTM B209 or EN 485Measured deviation
Edge conditionVisual and burr gaugeBurr within agreed limitPass / fail with photo
Coating (if coated)Film thickness gauge, colour deltaAAMA 2605 or agreed film build; ΔE within agreed rangeFilm build in µm, ΔE value
Heat identityCoil / plate tag against the certificateTag number matches the EN 10204 3.1Heat number recorded
PackingVisual before container sealingStrapped, wrapped, desiccant in placePhotographs
Container sealSeal number photographedNumber matches the shipping documentsSeal number

Certificates

EN 10204 — Why 3.1 and Not 2.2

2.2 — statement of compliance

The supplier states the material meets the standard. No test values, no heat analysis, no named signatory. It is a declaration, and it is the default a lot of export desks issue because it commits nobody to a number.

3.1 — inspection certificate

Carries the actual heat analysis and the mechanical test results, signed by the mill inspector who ran them. If a classification society, an aerospace customer or a pressure-vessel code sits behind your project, 3.1 is normally the minimum accepted.

We issue 3.1 as default on every order, not as an upgrade. If a supplier offers you 2.2 as standard and 3.1 as an extra, the question is what the 2.2 is hiding.

Claims

If It Fails on Arrival

1Report within 14 days

Send the inspection report and photographs. Markings on the packing and the heat tag are what link the material back to a specific heat.

2Claims come to us

Every line on the packing list is ours to answer for, including the ones we sourced in. You raise it once, with one contact, and it gets settled here rather than forwarded to whoever rolled the metal.

3One of three outcomes

Replacement material, credit against your next order, or a negotiated allowance. We state which one we are offering before you accept it.

Ask for the Sample Certificate Before You Order

We will send a redacted EN 10204 3.1 and an inspection checklist from a recent shipment, so you can see exactly what you will receive.

Tell us the grade, temper and thickness. Quote within 24 hours.
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