12-Ton Crawler Spider Crane: Pre-Shipment Acceptance Tests and Criteria
Pre-shipment acceptance of an Onchtech 12-ton crawler spider crane should establish that the machine matches the ordered configuration, performs the agreed functions and has the records needed for shipment review. For overseas procurement, the inspection should connect each check to a documented requirement—not simply confirm that the crane starts and moves.
Use the checklist below to prepare a factory acceptance test plan with Hunan Hongchang Machinery Co., Ltd., the manufacturer behind Onchtech. It is a procurement and inspection framework, not a completed test report or a substitute for the machine’s operating instructions.
1. Agree on the acceptance basis before testing
Acceptance criteria should reference the purchase agreement, approved technical specifications, manufacturer’s load chart, operating instructions and applicable destination-market requirements. Agree on the inspection scope, test conditions, witness arrangements and required evidence before the inspection date.
- Identify the machine: record its model, serial number and the technical-document revision used for acceptance.
- Freeze the configuration: confirm the engine, boom, controls, attachments, finish and other ordered options.
- Define measurable criteria: specify the relevant dimensions, functional checks, test methods and permitted tolerances in the approved plan.
- Set the release process: identify who reviews deviations, verifies corrective action and authorizes shipment.
2. Verify specifications and ordered equipment
The following published specifications provide a starting point for configuration verification. Customized equipment must be checked against the approved order rather than assumed to match the standard reference.
| Item | Published reference | Acceptance focus |
|---|---|---|
| Capacity and machine weight | 12-ton rating; 12.5-ton machine weight | Check identification, approved specifications and applicable load chart. |
| Transport dimensions | 6.15 m long × 1.86 m wide × 2.48 m high | Measure in the agreed stowed configuration; account for transport accessories. |
| Boom and reach | Five-section telescopic boom; published length range 5.5–21 m; maximum radius 19 m | Confirm the ordered boom and its approved operating envelope. |
| Engine | Yunnei 76 kW diesel; customization available | Verify nameplate, ordered engine and destination-market emissions requirements. The published standard lists China Stage II emissions. |
| Undercarriage and outriggers | 400 mm steel tracks; manual swing-out, hydraulic extension and hydraulic support | Verify track specification, deployment geometry and the approved outrigger layout. |
| Controls and options | Manual controls; optional remote control, load-moment controller/display, work basket and hydraulic fly jib | Confirm each ordered option, its exact functionality, compatibility and documentation. |
Resolve unclear units, dimensional references or conflicting specification entries in writing before approval. A published specification is not, by itself, evidence of a measured test result.
3. Inspect structure, hydraulics and operating functions
For each inspection item, record the method, observed result, acceptance reference and status: pass, deviation or not applicable. The criteria below should be incorporated into the agreed test plan.
| Inspection area | Checks and acceptance basis | Evidence to retain |
|---|---|---|
| Structure and assembly | Inspect accessible boom sections, chassis, outriggers, weld areas, pins, retainers and fasteners for visible damage or assembly defects. Assess findings against approved inspection criteria. | Inspection sheet and detailed photographs of findings. |
| Hydraulic system | Check hose routing, fittings, cylinders and connections during agreed operating cycles. Evaluate leakage, interference and motion against the approved procedure. | Observations, test conditions and specified measurements. |
| Travel and steering | Check forward/reverse travel, steering and stopping in a controlled area. Measure travel speed only under defined conditions. Travel capability does not establish lifting capability on a slope. | Surface conditions, configuration and functional results. |
| Outrigger operation | Verify swing-out, extension, support, securing and retraction. Confirm positioning and machine leveling according to the operating instructions. | Deployment measurements and setup photographs. |
| Boom, slew and hoist | Check telescoping, luffing, slewing, hoisting and controlled stopping. Inspect rope reeving, hook assembly and rope condition against approved requirements. | Functional results and agreed speed or movement measurements. |
| Controls and safety functions | Verify control labeling, direction of movement and fitted protective functions. Test ordered remote-control and load-moment functions using the manufacturer-approved method. | Installed-device list, test results and applicable calibration records. |
4. Control lifting tests through an approved procedure
Any load test requires qualified personnel, a controlled test area, suitable ground support and an approved procedure. Do not improvise test loads, overload percentages or holding times from the product’s headline capacity.
- Specify the test load and its verification method, working radius, boom configuration, rope reeving and outrigger setup.
- Define environmental limits, exclusion zones, personnel responsibilities and stop conditions.
- Record the required lifting, lowering, holding and stopping observations against explicit acceptance criteria.
- Identify whether statutory proof testing or independent witnessing is required for the destination market.
Factory acceptance is not blanket regulatory approval. Export suitability, emissions compliance and any personnel-lifting use of an optional work basket require separate verification for the ordered configuration and intended market.
5. Close deviations and assemble the shipment record
Agree which documents must accompany the crane and which must be reviewed before shipment release. Keep the record linked to the inspected machine’s serial number.
- Configuration record: approved specifications, equipment list and identification photographs.
- Inspection evidence: completed checklist, measurements, functional-test results and any agreed load-test report.
- Operating information: applicable load chart, operating and maintenance instructions, and documentation for installed options.
- Compliance evidence: documents required by the contract and destination market, verified for applicability to the supplied machine.
- Deviation closure: issue description, corrective action, reinspection result and authorized disposition.
- Shipping readiness: agreed packing list, loose-accessory inventory, stowed configuration and transport preparation records.
A photograph or demonstration video can support the record, but should not replace required measurements, signed reports or unresolved-deviation review.
Questions overseas buyers should resolve
Does a 1.86 m machine width mean the crane can lift within that footprint?
No. Machine width is an access-planning reference. Lifting requires the outrigger arrangement, ground conditions and clearances specified for the selected operating configuration.
Are remote control and a load-moment device standard equipment?
The supplied product information lists these as options. Confirm the ordered devices and distinguish display-only functions from protective control functions before defining acceptance tests.
Can a general company certificate replace machine-specific checks?
No. Review certification scope and applicable machine documentation separately. A company-level credential does not establish that a particular configuration meets every destination-market requirement.
Prepare an inspection scope for your order
Share your destination country, lifting requirements, access restrictions, requested options and witness requirements with Onchtech. These inputs provide the basis for confirming the crane configuration, agreeing on pre-shipment acceptance criteria and defining the inspection records to be reviewed before release.
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