GB/T 10632-2026Fireworks - Rules of sampling and inspection (English PDF)

4.3 Determining the Sample Size

4.3.1 Determine the sampling sample size based on the purpose of the sampling inspection and the product batch size. Tables 1 to 3 show the sample sizes required for product factory inspection and delivery inspection. The minimum sample size can be adjusted according to the needs of the test.

4.3.2 Small fireworks of the same type, and combinations of small fireworks of different types, including small fireworks containing tubes of different inner diameters, with the smallest single tube of the small fireworks having the smallest inner diameter. The total number of samples was determined according to Table 2.

4.3.3 Combinations of spray beads, and different combinations of spray beads and spray patterns, including spray beads containing cylinders of different inner diameters, with the smallest single cylinder inner diameter for spray beads and the spray beads... The total number of shots was determined by sampling the sample size as shown in Table 2.

4.3.4 The sample size for the spraying combination is determined by the smallest single tube inner diameter and the total number of sprays according to Table 2.

4.3.5 For No. 3 to No. 6 fireworks shells, the sample size shall be determined as 60% (rounded up) of the sample size specified in Table

3.For No. 7 and above fireworks shells, the sample size shall be determined as specified in Table 3. The sample size is determined by 30% of the sample size (rounded up), but the minimum sample size should not be less than 3.

4.3.6 Type testing and supervisory inspection shall be based on the sample size determined in

4.3.1 to 4.3.5, and may be adjusted according to the purpose of the sampling and the needs of the inspection items. Adjust the sampling size.

4.3.7 If samples need to be retained for inspection, sampling may be carried out at twice the rate specified in

4.4 Sampling Rules

4.4.1 The sample is drawn using a random sampling method, with the sample being drawn as dispersed as possible.

4.4.2 Samples shall be drawn from the boxed products, and the sample size shall be at least 50% (rounded up) of the sample quantity specified in Table 1, Table 2 or Table 3, depending on the type of sample. (Round to the nearest integer) Determine the number of boxes to be inspected, and then randomly select at least one sample from the randomly selected boxes to form the required sample size.

4.4.3 When drawing samples from mixed packages or mixed packaging, the sample size shall be randomly selected according to the sample type specified in Table 1, Table 2 or Table 3. Extract packages (boxes), then open the extracted packages (boxes), and randomly select at least one sample from each extracted package (box) to form the required sample size.

5.1 Inspection Items

5.1.1 Factory inspection, delivery inspection and type inspection items shall be carried out in accordance with the provisions of GB 10631-2025.

5.1.2 Supervision and inspection, and commissioned random inspection shall be carried out according to the inspection items determined by the buyer. If a comprehensive assessment of product quality is required, the buyer shall determine the inspection items. The inspection report should include all factory inspection items.

5.2 Test Methods Implement according to GB/T 41644-2022.

5.3 Inspection Process

5.3.1 Based on the inspection category, and following the principle of prioritizing inspection items that do not damage the sample, conduct the inspections item by item according to the process shown in Figure 1.

5.3.2 If a fatal defect is found in the test sample during the inspection process, or if it may endanger personal safety or public property safety, the inspection of the sample shall be terminated. Note

1.The area within the dashed box indicates the inspection process for factory inspection and delivery inspection items.

Note 2.n is the sample size; n1 is the sample size for drug quantity testing; n2 is the sample size for combustion performance testing; n3 is the sample size for safety performance testing. Figure

6.2 Batch Non-conformity Judgment

6.2.1 If one or more defects are found in a sample during inspection, the number of defect categories shall be counted according to the following different items to determine the sample. The number of judgments for each defect category.

a) The number of defect categories for marking, transport packaging, drug type, dosage, and safety performance is used as the judgment number according to the inspection items. Example. A sample consisting of 5 randomly selected bundles of firecrackers was inspected and found that the sales packaging of each bundle did not indicate the quantity (c) or the implementation standard number. (c) If the total amount of drug exceeds the maximum allowable amount of drug (a) and the drug hygroscopic rate exceeds the specified value (a), then the number of defects in this sample is

6.3.1 Special provisions for fatal defects

6.3.1.1 To eliminate fatal defects, the responsible department may conduct a batch-by-batch inspection or a sampling inspection method for verification. If a fatal defect is found, the batch will be rejected.

Note. The responsible department refers to one of the following departments. the quality inspection department within the supplier or the buyer, a third-party inspection agency, or a department agreed upon by both the supplier and the buyer.

6.3.1.2 Fireworks products found to have fatal defects should be rejected, regardless of whether they are part of the sample or whether the entire batch has been accepted. The batch was excluded and rejected.

6.3.2 Handling of Non-conforming Products Fireworks products with fatal defects should be rejected regardless of whether they are part of a sample or whether the batch has been accepted.

6.3.3 Handling of Nonconforming Batches

6.3.3.1 Any batch that is rejected due to irreparable fatal defects shall never be allowed to be submitted again.

6.3.3.2 Except for the non-conforming batches in 6.3.3.1, rejected non-conforming batches may be resubmitted after rework or re-inspection to remove non-conforming items.

6.3.3.3 When resubmitting the batch, should the inspection be conducted normally or with stricter checks? Should the inspection cover all categories of defects, or only the specific categories that led to batch rejection? The specific defects should be determined by the responsible department.

6.3.4 Requirements for sample size greater than or equal to batch size When the sample size of the sampling scheme used is greater than or equal to the batch size, a 100% inspection is performed.

7.Re-inspection If there is any objection to the test results, an application may be made to retest the sample, but retesting will not be accepted for non-reproducible defects in flammability.