Processes / Step 11 of 11

Inspection and Packing: The Last Checks Before Wood Goods Ship

Finished goods are checked against the approved sample and the spec, sampled by AQL, packed to survive transit and loaded with photos. It is the last point where a problem can be fixed cheaply.

Send an RFQ What to specify

Inspection and packingStep 11

Decides: Whether the goods that leave the factory match the order, and whether they arrive in the same condition.
Goes wrong as: Damaged goods, mold in the container, wrong colors in one lot, rejected pallets at the port and claims with no evidence.
Used for: Every product type

Inspection is not one event at the end of the line. Good factories check incoming lumber, first parts off each machine, parts before assembly and finished goods before packing. The final inspection then confirms what in-process checks should already have caught. A buyer who only looks at the final report sees the result, not the control.

Final inspection on volume orders is usually done by sampling, not by checking every piece. The sampling plan most used in trade is ISO 2859-1, often called AQL sampling. It sets how many units to pull from a lot and how many defects of each class are allowed before the lot fails. It only works if both sides agree in advance what counts as a critical, major or minor defect. Both sides also need to agree on what the approved sample looks like.

Packing is part of the product. Wood goods cross oceans in steel containers that heat up by day and cool by night, so packing must protect against impact, abrasion and moisture. Pallets and crates made of solid wood must carry the ISPM 15 mark. Loading photos and a packing list close the file, and a third-party inspector can confirm all of it for the buyer.

Inspection and packing: palletized goods in a warehouse ready to ship

Where it sits in the chain

Not every product goes through every step. A pallet skips finishing, a turned leg skips veneering.

Methods and machines

What a factory may run for inspection and packing, and where each method fits. Ask which one your parts will go through.

Method	What it does	Fits
In-process inspection	First article checks on each machine setup, patrol checks during runs and checks before assembly and finishing.	Every order. Catches errors while parts can still be remade.
Final random inspection (AQL)	Units are drawn at random from packed goods, unpacked and checked against the spec and the master sample. Results are judged by the AQL table.	Volume orders where checking every unit is not practical.
Full (100 percent) inspection	Every unit is checked, usually for a few critical points such as color, finish or function.	Small high value orders, critical safety points and re-inspection after a failed lot.
Packing and drop testing	A packed carton is dropped on its corners, edges and faces in a set sequence, then opened and checked. ISTA test procedures, for example 1A, 2A or 3A, give a recognized method.	New products, new packaging and goods sold by parcel delivery.
Container loading supervision	The loading is watched and photographed: empty container, layers, bracing, closed doors and seal number.	Every full container, especially mixed loads.
Third-party inspection	An independent inspection company runs the final inspection and loading check and sends a report with photos.	Buyers who cannot visit the factory, first orders and new suppliers.

What you specify

These points decide whether two factories quote the same thing. Put them in the RFQ or the purchase order.

Sampling planState the standard and level, for example ISO 2859-1, general inspection level II, single sampling, with AQL values for major and minor defects and zero critical defects.
Defect list and classesWrite a defect list for the product with each defect classed as critical, major or minor. Attach photos where a word is not enough.
Master and limit samplesKeep a signed master sample at the factory and one with the buyer, plus light and dark limit samples for color.
Moisture checkRequire moisture readings on finished goods on the day of packing, with the meter and species setting recorded.
Packing specState carton type and board grade, corner and edge protection, film or bags, desiccant, labels, carton marks and units per carton.
Pallets and loadingRequire ISPM 15 marked solid wood pallets or crates, a loading plan and photos of each loading stage with the seal number.

Typical values

Published and common industry figures. They vary by species, product and factory, so treat them as a starting point and confirm on the quote.

Item	Typical value	Note
Common AQL values in consumer goods	Critical 0, major 2.5, minor 4.0	Widely used starting point, agreed per order. Typical.
Sample size example	Lot of 501 to 1,200 units: 80 samples	ISO 2859-1, general inspection level II, single normal sampling. Larger lots need larger samples.
Acceptance example for 80 samples	Major 2.5: accept up to 5. Minor 4.0: accept up to 7	From the same ISO 2859-1 table. Confirm the numbers on the inspection booking.
When final inspection is booked	Production complete and at least about 80 percent packed	Common practice for pre-shipment inspection. Typical.
ISPM 15 heat treatment	56 °C at the core for 30 minutes	For solid wood packaging. Plywood, OSB and particleboard are exempt from ISPM 15.
Moisture at packing, interior furniture	Often 6 to 9 percent for heated climates	Match the target in the order. Typical.

Defects and how to prevent them

What goes wrong at this step, why it happens and what to ask before production so it does not reach your warehouse.

Defect	Usual cause	What to ask or check
Transit damage: crushed corners, dents, scratches	Weak cartons, missing corner protectors, loose items inside the carton or poor stacking in the container.	Ask for a drop test on the packed product and photos of the inner packing.
Mold in the container	Wood packed too wet, wet pallets, condensation from temperature swings or no desiccant.	Ask for moisture readings at packing, dry pallets and desiccant in the container.
Color mix within one order	Parts from different lumber batches or finish batches packed together without sorting.	Ask for color sorting against the master and limit samples before packing.
Pallets refused at the port	Missing or unreadable ISPM 15 mark, or bark on pallet wood.	Ask for photos of the mark on each pallet type before loading.
Wrong or missing parts and hardware	Packing from mixed batches or hardware bags packed by count without checking.	Ask for a carton audit against the packing list in the final inspection.
Claims with no evidence	No inspection report, no loading photos or no record of the seal number.	Require an inspection report and loading photos before paying the balance.

Questions to ask the factory

Ask on a video call with the line running. Keep the answers in writing.

Which checks do you run during production, and can I see the records for a recent order?
Which sampling plan do you use for final inspection, and who does it?
Can you work with a third-party inspector and give them space and help to unpack?
What carton grade and inner protection do you use for this product, and has the pack been drop tested?
Are your pallets ISPM 15 marked, and who treats them?
Do you send loading photos and the seal number for every container?

How to write it in the RFQ

Example lines you can adapt.

Final inspection to ISO 2859-1, general level II, AQL 0 critical, 2.5 major, 4.0 minor, against the signed master sample and attached defect list. Moisture readings on packing day.
Export cartons with corner protectors, film and desiccant, ISPM 15 marked pallets, drop test on first shipment, loading photos and seal number before balance payment.

Send your RFQ and we match it with up to 3 factories that run this step for your product.

Materials and inspection and packing

How common species and panels behave at this step.

RubberwoodProne to mold and stain if packed damp. Moisture checks on packing day and desiccant matter most here.
AcaciaColor and grain vary widely, so color sorting against limit samples is part of every final inspection.
Black walnutSapwood and color variation must be sorted against the agreed grade before packing.
Radiata pineCommon for pallets and crates. Needs ISPM 15 treatment and dry stock to avoid blue stain and mold.
MDFEdges and corners crush easily and swell if wet. Corner protectors and film wrap are essential.

Questions buyers ask about inspection and packing

Deeper guides on this step:

Wood Parts Inspection: Grade Rules, Defects and Tolerances to Agree
How Container Loading Changes the Price of Wood Products
Compliance Rules That Apply to Manufactured Wood Products

Background reading: Acceptable quality limit (Wikipedia)

What does AQL 2.5 mean?

It is the acceptance quality limit in the ISO 2859-1 sampling tables. In practice it sets how many major defects are allowed in the sample before the lot fails. It does not mean 2.5 percent of the shipment may be defective.

Is a third-party inspection worth it?

For first orders and new suppliers, usually yes. An inspector checks against your spec and master sample and photographs the loading. That gives you evidence before the balance is paid.

Do plywood crates need ISPM 15?

No. Plywood, OSB and particleboard are processed wood and exempt. Solid wood pallets, crates and dunnage must be treated and marked.

How do I stop mold in the container?

Pack wood at the right moisture, use dry pallets, add desiccant and avoid leaving loaded containers in the rain. Desiccant helps but cannot fix wood that was wet when packed.

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