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

A supplier's statement that a SANY-compatible undercarriage part uses the same material is not evidence. Request a batch-linked material document that connects the supplied part or its production lot to a stated material designation and applicable test or inspection results. Until that link exists, treat the claim as unverified.

1. Confirm the part identity before discussing material

Material evidence is only useful if the part is the correct part for the machine and position. A dusty quarry or long-hour construction machine makes undercarriage wear important, but operating conditions do not prove material grade or batch quality.

Model, suffix and serial number

Collect the model and suffix, product identification or serial number, old part number from the removed component, component or housing photos, and installation position. Model alone cannot confirm fitment, batch quality or authenticity.

Catalogue revision and supersession

Where available, check the applicable SANY parts catalogue or supplied technical record and any documented supersession. If the supplier cannot show which catalogue revision or drawing applies, request that missing information instead of guessing.

2. Request a batch-linked material document

A supplier may say 'same material' because the part is sold as SANY-compatible. That is a compatibility or marketing statement, not batch evidence.

Material designation

Ask for the exact material designation on the drawing, purchase order or applicable specification. Do not accept a general term such as 'wear-resistant steel' or 'same as original'.

Heat, lot or batch number

Request the heat number, lot number or batch number and a certificate that ties that number to the part or its packaging. The useful document is one that can be traced to the parts you receive.

Mill certificate or material test report

Ask for a mill certificate, material test report or equivalent inspection document from the material producer or supplier. It should state the material designation, heat or lot number, supplier or manufacturer name, and any applicable specification or drawing reference.

3. Separate statements from sample results and batch acceptance

Do not let one document cover too many claims. Keep part identity, fitment, provenance, sample results and batch acceptance separate.

Supplier manufacturing statement

A supplier's written statement that production used the same material may support an application file, but it is not a substitute for a batch-linked certificate or test data.

Sample test evidence

If the supplier provides test results, ask which sample was tested, how the sample relates to the lot you are buying, and which test method or acceptance criteria applied. Request the actual result, not only a certificate title.

Batch acceptance

Batch acceptance means the received lot matches the documented lot. Compare the heat or lot number on the part, label or packing list with the certificate. If they do not match, the certificate does not cover your part.

4. Useful checks without guessing

A practical sequence is: observe the supplier claim, request the missing evidence, then check the link between part and document.

Observation

The supplier says the compatible part uses the same material.

Evidence needed

Part identity records and a batch-linked material document tied to the actual lot.

Next check

Compare the heat or lot number on the part and certificate, and confirm the material designation and applicable specification.

Procurement decision

Accept only when the responsible parties confirm that the document applies to the received lot and meets the applicable requirements.

5. Missing evidence and procurement next step

If the supplier provides only a photo or a general statement, ask for the missing traceability link. A photo of a part does not prove material composition, heat treatment or the batch the supplier will ship.

Before payment or a large order, request the material document for the actual lot, or a written confirmation that the certificate will be supplied with the batch and that the buyer may reject it if it does not match.

MechLink may help organise candidate-part documentation questions for single-item or project purchasing. It is an external parts-information support platform, not a materials certification body, certification lab or SANY official contact. Use it to prepare what to request from the supplier, not as a substitute for a material certificate.

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. MechLink WhatsApp for parts information and procurement enquiries: +77026410210. This is the MechLink enquiry channel for readers in this market; it is not a SANY official contact and does not imply a local office or local stock.

Sources

No external documents, catalogues, standards or certificates were inspected for this article. The checks above are general procurement and documentation practices; they do not verify any particular SANY part or supplier document.