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Pre-shipment inspection is the final opportunity to identify visible and verifiable non-conformities while industrial machinery remains at the supplier's factory. Once equipment is packed, shipped and installed abroad, correction becomes slower, more expensive and more disruptive.

Inspection does not guarantee lifetime reliability, and it cannot replace a properly designed Factory Acceptance Test. It confirms that the equipment presented for shipment matches the approved order and release requirements.

For the full purchasing sequence, see How to Source Industrial Machinery from China.

What should pre-shipment inspection achieve?

When should machinery inspection be scheduled?

Schedule the main inspection when production and supplier internal testing are complete but before final packing. Ask the supplier to confirm readiness with machine identity, completion status and an open-item list.

An inspection conducted too early finds unfinished work. An inspection conducted after crating cannot examine internal components, wiring, fasteners, paint or identification adequately.

1. 1
   Supplier completion

   Production and internal quality checks are complete.

2. 2
   Buyer inspection

   Identity, conformity, workmanship, components, functions and documents are checked.

3. 3
   Correction

   Non-conformities are closed and critical items are reverified.

4. 4
   Packing check

   Protection, fixing, labels and packing list are confirmed.

5. 5
   Release

   Authorized party approves payment or shipment under the contract.

What documents should the inspector receive?

The checklist must be built from controlled project documents, not memory.

Step 1: Confirm identity and quantity

Record manufacturer, model, serial number, principal nameplate values and quantity. Match auxiliary equipment, cabinets and modules to the order. Photograph identification clearly.

For lines with many modules, use a system tag or equipment list so that identical-looking items are not confused or omitted.

Step 2: Inspect workmanship and physical condition

Review fabrication, welding where relevant, paint, corrosion protection, guards, enclosures, piping, hoses, fasteners, alignment, cleanliness, leaks and signs of damage.

Check dimensions and connection locations identified as critical for installation. Measurements should use appropriate tools and defined tolerances.

Step 3: Verify critical components

Match controlled motors, drives, PLCs, HMIs, bearings, sensors, pumps, valves, processing units and safety devices against the approved component schedule. Record brand, model, rating and serial or batch information where required.

If a component differs, do not accept a verbal statement that it is equivalent. Open a deviation and request the technical comparison and approval history.

Step 4: Check electrical and control systems

Inspect cabinet layout, wiring workmanship, cable identification, protection devices, cooling, terminals, earthing and space for maintenance. Confirm the declared voltage, frequency and phase on relevant nameplates.

Operate the interface to check modes, setpoints, alarms and status indications within the agreed inspection scope. Record PLC and HMI version or backup delivery when required.

Step 5: Witness functional checks

Run startup, normal operation and shutdown. Check actuators, sensors, controls, alarms and interlocks that can be demonstrated safely.

Functional inspection is not automatically a performance test. If output, pressure, flow, cycle time, accuracy or energy is contractually guaranteed, follow the approved FAT protocol or other defined measurement method.

Step 6: Review documents and included items

Confirm manuals, drawings, diagrams, certificates, test reports, backups, passwords or access records included contractually. Count spares, consumables, accessories, special tools and loose items.

Check document language, revision, machine identity and file readability. A generic manual for another model is not a complete deliverable.

Step 7: Record and classify non-conformities

Each issue should state the requirement, observation, evidence, severity, responsible party, due date and closure method.

The contract or inspection plan should define classification and authority. Do not leave shipment-blocking decisions to informal discussion during the visit.

Step 8: Verify corrections and release status

Photographs may be sufficient for some minor corrections. Component, functional or performance deviations may require live verification or retesting. Keep the original issue open until the approved closure evidence is accepted.

Connect release to the payment red-flag and milestone checklist. A shipping deadline should not silently convert failed criteria into accepted deviations.

Step 9: Inspect export packing

After technical release, inspect the packaging method against machine size, weight, route, handling and storage exposure.

Common inspection mistakes

Final pre-shipment release checklist

Confirm that the machine identity, configuration, condition, components, functions, documents, included items and packing satisfy the approved requirements. Record remaining open items and identify who has authority to approve release.

Request machinery inspection in China

Flux Equipment Pro can coordinate pre-shipment machinery inspections, component checks, document reviews, non-conformity reporting and correction verification before export.