A supplier says a SANY-compatible undercarriage part uses the same material: what evidence should I request?

Ask for three connected items: the exact material designation, a batch or heat number that links the claim to the part you would receive, and a test or inspection record showing a measured result against a stated acceptance limit. Do not accept the phrase 'same material' by itself.

1. Start with part identity before accepting a material claim

A dusty quarry or long-hour construction machine can combine old, superseded, or repaired undercarriage parts. Model alone never confirms fitment, batch quality, or authenticity.

Request:

• model or suffix and serial number
• old part number from the removed part
• nameplate or housing photos
• installation position
• applicable catalogue revision or documented supersession if the part number changed

If any of these are missing, request them first. A material certificate for the wrong part number is not useful.

2. Ask for the exact material designation

'Same material' is a marketing statement unless the supplier can state the exact material designation from a drawing, specification, or parts document. In dusty quarry service, operators often hear 'same as original' or 'same hardness'; that is not a designation.

Ask the supplier to write:

• the material designation claimed
• the document and revision where that designation appears

Do not guess a grade or standard. If the supplier cannot provide a designation, the missing evidence is the starting point.

3. Require batch-linked traceability

A generic material certificate or brochure statement does not follow the part to your machine.

Ask for:

• heat number, lot number, or batch number
• link from that number to the candidate part number and the purchase lot or delivery note
• marking on the part or packaging that matches the document

A photo of a label can help identify the part or lot, but it is not proof of internal material properties.

4. Separate manufacturing statements from test evidence

Procurement teams often receive a manufacturer or supplier declaration. That describes the intended material or process.

It is not the same as batch-linked test evidence.

Ask whether the document is:

• a manufacturing statement or declaration; or
• a test report, inspection certificate, or batch certificate with actual measured results

If it is only a statement, ask for the relevant test evidence if the acceptance requirement calls for it.

Relevant test evidence

The supplier should not just provide any test. The applicable engineering requirement decides what is relevant. Common undercarriage material evidence may include chemical composition, hardness, or other mechanical tests, but only if the actual specification requires them.

For each test result, check that the document shows:

• the measured result
• the specified acceptance range or limit
• the test method or standard actually referenced
• the date and the issuing lab or mill
• traceability to the heat or lot number

Do not invent a test standard or required reading. If the applicable manual or engineering document is not available, say that the acceptance requirement remains unverified.

5. Keep identity, fitment, provenance, sample results, and batch acceptance separate

A supplier may mix a photo of an old part, a similar catalogue page, and an unrelated material certificate. That does not create one complete evidence chain.

Keep these separate:

• Part identity: what the part number and serial or application say.
• Fitment: whether it is listed or documented for the machine.
• Provenance: who made it, supplied it, or marked it.
• Sample results: one tested sample or heat.
• Batch acceptance: whether the lot you are buying is covered.

A photograph or a supplier statement is not proof of every claim.

6. Use the missing evidence as the next procurement step

Before comparing offers or accepting a part, send a written request such as:

• 'Please state the exact material designation and the document or revision where it appears.'
• 'Please provide the heat or lot number and link it to the part number and our delivery note.'
• 'Please provide the batch test report showing measured result, acceptance limit, method, date, and lab identity.'
• 'Please confirm whether your document is a manufacturing statement or a batch-linked test record.'

Then compare the response against the actual applicable SANY or equipment parts catalogue, manual, or engineering requirement. Only the responsible parties can decide acceptance using those requirements.

For single-item or project purchasing, MechLink may help organise candidate-part documentation questions before you compare offers, such as separating identity, fitment, provenance, and batch evidence. MechLink is an external commercial parts-information support service, not a materials certification body, not an official SANY contact, and it cannot certify a material.

7. What still remains unverified

If the supplier sends a certificate, you can confirm that a document was provided. You cannot claim it is authentic or technically valid unless you verify it with the issuer, laboratory, or the actual specification.

A batch certificate for one heat does not prove a different lot. A supplier's own statement does not prove independent testing. A photo of a new part does not prove its internal material.

Parts Matching Support

If you need parts information or procurement clarification, prepare model + serial number + old part number + component/housing photos and relevant labels or records before making an enquiry. This helps separate material evidence from fitment and identity questions. MechLink WhatsApp for parts information and procurement enquiries: +77026412810. This is a third-party information support channel serving readers in this market; it is not a SANY official contact and does not imply a local office or local stock.

Sources

No supplier document, parts catalogue, material standard, test report, or certification record was inspected for this article. The points above are an editorial evidence checklist for requesting and comparing documents, not a technical acceptance decision.