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

Request a batch-linked evidence chain. Ask the supplier for: the written material designation tied to that specific part number or lot; a manufacturing statement covering that batch; batch or heat-linked documents; and only the test or acceptance records the supplier actually holds for that batch. Do not accept the phrase 'same material' as a stand-alone claim.

1. Start with part identity, not material claims

A dusty quarry or long-hour construction machine makes undercarriage wear, impact and fitment important, but that operating context does not prove metallurgy. Before evaluating material, confirm which undercarriage part you are actually buying.

Model alone never confirms fitment, batch quality or authenticity. Use model/suffix, serial number, nameplate, old part number, component or housing photos, installation position, applicable catalogue revision and documented supersession only when relevant. If any of these are missing, ask for them instead of guessing.

2. Request the material evidence chain

Material designation

Ask for the material designation or grade as stated in the supplier's controlled drawing, specification, or traceability record. This may be an internal code or a named designation, but a verbal statement is not the written designation.

Batch-linked documents

A material claim is only useful if it traces to the batch you will receive. Ask for a heat number, lot number, production batch number, or equivalent supplier batch identifier, and a document that connects that identifier to the part number, quantity, and date or delivery.

Manufacturing statement

Ask whether the supplier is making a documented manufacturing statement: for example a certificate of conformity, declaration of conformance, factory release note, or equivalent. Clarify what the statement covers: material, dimensions, heat treatment, surface condition, or only commercial origin.

Relevant test evidence

Ask what test evidence exists for that batch. This may be a mill test report, material certificate, hardness or chemistry result, or acceptance record if actually available. Request the actual record, not a summary. If the supplier has no batch-level test evidence, treat the claim as unverified.

3. Keep evidence types separate

Keep part identity, fitment, provenance, sample results and batch acceptance separate. A photo or supplier statement is not proof of every claim. A part that fits one serial range does not prove the same metallurgy; a sample result from another batch does not prove your batch; a catalogue image is not a batch-linked test report.

Material designation, manufacturing statement and test evidence should align on the same batch identifier. If one link is missing, request it before acceptance.

4. Procurement next step

Send a short evidence request with the machine and old-part information, then ask for the written material designation, batch or heat identifier, manufacturing statement, and any batch-linked test or acceptance record. Ask the supplier to state clearly if no batch-level document exists.

Only the responsible parties can decide acceptance using the applicable requirements. This article is not a certification, test or acceptance decision.

Parts Matching Support

If you need help organising candidate-part documentation questions for single-item or project purchasing, MechLink may help prepare the request around model + serial number + old part number + component/housing photos and relevant labels or records. MechLink is an external commercial parts-information service, not a materials certification body, a SANY official site, an authorised dealer or a service centre. MechLink WhatsApp for parts information and procurement enquiries: +77026412810. This is not a SANY official contact and does not imply a local office or local stock.

Sources

No manufacturer, supplier, catalogue, standard, or test report was inspected for this article. The answer is limited to procurement-evidence practice and does not verify any SANY or supplier document.