QB/T 2002.2-2018Hardware fitting of leather products-Specification of sprayed coating (English PDF)

6.4 Corrosion resistance

Carry out inspection according to GB/T 1771, without making scratches. The test time is 16 h.

7.1 Group-batch

The products of same type which are produced by the use of the same variety of raw materials according to the same production process form an inspection batch.

7.2 Exit-factory inspection

7.2.1 Each batch of products shall be inspected one by one before exit-factory.

They can only exit-factory after passing the inspection.

7.2.2 Inspection items. Appearance quality.

7.3 Type inspection

7.3.1 Under one of the following conditions, it shall carry out type inspection.

a) When there are major changes in product structure, process, materials.

b) When the production is restored after suspension for more than half a year;

c) When the national quality supervision institute proposes to carry out type inspection;

d) At the time of normal production, the type inspection shall be carried out at least once every six months.

7.3.2 Sampling quantity

From the products which pass the exit-factory inspection, randomly take 12 products for inspection. For the following 4 items. appearance quality, adhesion, corrosion resistance, respectively take 3 products for testing.

7.3.3 Judgment of qualification

7.3.3.1 Judgement rules for single-item

For each item, take 3 specimens for testing. If there is one or more nonconformances, this item is judged as disqualified. If the product has a defect which affects the use function of the product, this product can be judged as disqualified.

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