What to Ask Before Buying a Mixed Batch of SANY Spare Parts for a Remote Kazakhstan Project

Ask for a line-by-line evidence schedule, not a general parts list. For each item where fitment, age, material or pressure rating matters, request a candidate number that links the exact unit or package to the supplier photo, old part number, machine/assembly identity, supplied condition, batch/date reference and the specific record claimed. Unresolved points should be written into the dated supply terms before dispatch.

Remote projects reduce the chance to inspect and return parts quickly. A mixed batch often contains filters, seals, hoses and undercarriage pieces, each needing different evidence. Model name alone does not prove any of them. The goal is not a thicker file; it is a traceable link between each order line and the part actually shipped.

1. Turn a mixed batch into individual evidence lines

Assign a short candidate number to each order line: for example FS-01, SE-02, HO-03, UC-04. Ask the supplier to use the same number in quotation lines, packing photos, batch labels, delivery note and any test record.

This separates part identity, fitment, provenance, sample results and batch acceptance. A certificate for the whole batch may only restate what the supplier claims. A line-level candidate number makes it possible to challenge one item without rejecting the whole shipment.

For each candidate, ask for a simple written status: identified, supplied condition confirmed, batch/date recorded, documents linked, unresolved. That prevents a thick pack from hiding a missing link.

2. Start with machine and assembly identity, not model only

Model/suffix is the starting point, not the confirmation. For each candidate, request:

• Machine model and suffix, plus machine serial number if available.
• Assembly serial number or nameplate photo where the part is installed or removed from.
• Old part number from the removed component, not only the catalogue number.
• Installation position, such as left-hand track frame, main boom cylinder rod seal, or return filter housing.
• Applicable parts catalogue revision for the serial number, if the supplier is using one.
• Documented supersession if the supplier says a number has been replaced.
• Supplied condition stated in writing, such as new unused, old stock, reconditioned, removed, or aftermarket equivalent; and whether packaging is intact.

A photo of the old component or housing helps more than a written description. Ask the supplier to state whether their answer is from a current catalogue, an old catalogue, a cross-reference, a physical label or memory. If they cannot name the source, request it again in writing.

Parts Matching Support Note

MechLink, an external commercial parts-support service, can help organise a line-item candidate-number enquiry if the local team is short on time. Useful inputs are model + serial number + old part number + component/housing photos and relevant labels or records. MechLink is not an official SANY site, dealer, certification body or testing platform. Kazakhstan Phone / WhatsApp: +77026412810.

3. Match evidence to the part type

Not every line needs the same documents. Filters, seals, hoses and undercarriage items fail differently, so the important question changes.

Filters

For filters, fitment and shelf age matter first. Ask for:

• SANY part number or a documented cross-reference for the specific machine serial number.
• Thread, seal face, outer diameter and bypass pressure if substitution is proposed.
• Date code, production date or shelf-life marking from the filter or its packaging.
• Whether the filter is packed as an individual unit and whether the gasket or o-ring is included.
• A photo of the printed marking, not only the carton.

Do not require a laboratory efficiency test for a standard filter unless the project specification explicitly calls for it. A dated batch code is usually more useful than a general ISO certificate.

Seals

Seals are small and easy to misidentify. Ask for:

• Old part number from the removed seal, or housing/rod/gland photos.
• Dimensions: inner diameter, cross-section or outer diameter, and groove design where relevant.
• Material if the seal works in oil, high temperature or special fluid: for example NBR, FKM or HNBR. Do not guess material from colour alone.
• Kit reference if it is part of a seal kit, and the exact contents of that kit.

A supplier statement that the seal is 'compatible' is not proof. Request the written material or dimension record. If the material is not marked on the part, ask the supplier to state on the delivery note what it supplied and its source.

Hoses

Hoses need assembly-level evidence, not just bulk hose stock. Ask for:

• Complete assembly part number or old part number from the removed hose.
• End fitting type, size, orientation and overall length.
• Working pressure or pressure class if the hose is for a hydraulic function.
• Fluid compatibility statement if the hose is not a standard SANY-number assembly.
• Photo of the ferrule marking, hose printing or identification label.
• If the supplier says a hose number is superseded, the documented supersession chain.

For a remote project, a hydraulic hose with the right length but wrong pressure class can be a hidden failure. If no pressure class is available, list it as unresolved.

Undercarriage items

For track links, pins, bushings, shoes, rollers or idlers, ask for:

• Machine model and undercarriage configuration, not only the machine name.
• Old part number or casting/forging identification from the removed component.
• Key dimensions where interchange is claimed: pitch, pin/boss diameter, bushing length and outer diameter, shoe width and bolt pattern.
• Batch, heat lot, casting date or production date if supplied.
• Photos of the wear face, bolt bosses and any stamped marks.

Do not ask for a full metallurgical report for every undercarriage piece unless the part has failed before or the contract requires it. The missing evidence is often the dimensional link to the old undercarriage system.

4. Read the document pack for item-to-record links

A thick pack can still lack the connection that matters. A general company certificate, an ISO 9001 certificate, a brochure or a sample test report does not prove that Filter FS-01 in the shipment came from the batch named on the certificate.

For every document, ask: which candidate number does this record belong to? If the document cannot be mapped to a candidate, treat it as background, not batch acceptance.

Also separate the supplier's statements from the documents. A photo is evidence of what was photographed, not of every claim. A statement that a part is 'new' is useful only if the supplier confirms the supplied condition in writing and, where relevant, the packaging/date code supports that.

If you cannot inspect a source document, say so in the request: we have not inspected the original certificate; please confirm the document number and the candidate number it covers. Do not turn an unverified document into proof.

5. Put unresolved points in dated written supply terms

Before shipment, convert unresolved checks into short written terms. Examples include:

• Substitution is allowed only after written approval with the substituted part number, dimensions and source.
• For filters, seals and hoses, the supplier states the date code or shelf-life status for each candidate; age-prone items older than the project's written acceptance limit are replaced or credited.
• For hoses, the pressure class or assembly rating is stated, not assumed.
• For undercarriage items, offered dimensions are mapped to the existing system and the old part number.
• Any claim based on a catalogue revision must identify that revision.
• Where evidence is missing, the supplier writes 'not available' instead of leaving the line blank.

Ask for the supply terms to be dated and attached to the quotation or order. A verbal 'it will fit' is not an inspection result and is not a record for a remote site.

6. Next step before shipment

Send the supplier a short line-level request with candidate number, machine/assembly identity, old part number or photos, supplied condition, batch/date reference, and the specific record needed for that part type. Mark each line open or closed.

Do not accept a general document pack as closing all lines. The responsible technical or quality personnel still decide acceptance using the applicable SANY or project requirements. The buyer's job is to keep identity, fitment, provenance, sample results and batch acceptance visible and item-linked before parts leave for the remote site.

Sources

None inspected. This article uses the submitted procurement question and standard parts-procurement evidence practice only; no manufacturer database, supplier file, catalogue page or test report was reviewed for this response.