GB/T 35598-2017Heat resistant glass wares by pressing (English PDF)

3.4.5 Scratches and abrasions

3.4.5.1 There shall be no scratches.

3.4.5.2 The length of scratches shall not exceed the specifications in Table 4.

4.1 Physical-chemical properties

4.1.1 Linear thermal expansion coefficient

It is carried out, according to the test method, which is specified in GB/T 16920 or

GB/T 28194.

4.1.2 Water resistance

It is carried out, according to the test method, which is specified in GB/T 6582.

4.1.3 Alkali resistance

It is carried out, according to the test method, which is specified in GB/T 6580.

4.1.4 Acid resistance

It is carried out, according to the test method, which is specified in GB/T 6581 or GB/T

15728.

4.1.5 Dissolution of lead, cadmium, arsenic, antimony

The dissolution of lead and cadmium shall be carried out, according to the test method, which is specified in GB/T 21170.The dissolution of arsenic and antimony shall be carried out, according to the test method, which is specified in GB/T 35595.

4.1.6 Thermal shock temperature

It is carried out, according to the test method, which is specified in GB/T 6579.

4.1.7 Internal stress

It is carried out, according to the test method, which is specified in GB/T 15726.

form a batch.

5.2.3 Inspection implementation and inspection results

Inspection items, inspection levels, acceptance quality limits shall comply with Table

6.

Sampling inspection shall be carried out by the manufacturer, according to the exit- factory inspection items in Table 5.The batch of products, that have passed the inspection AND been accompanied with a certificate, can leave the factory.

5.3 Type inspection

5.3.1 Sampling plan

It shall adopt the normal inspection one-time sampling plan of GB/T 2828.1.The inspection level and acceptance quality limit (AQL) are as shown in Table 6.

5.3.2 Inspection implementation and inspection results

Inspection items, inspection levels, acceptance quality limits shall comply with the provisions in Table 6.

Sampling inspection shall be carried out by the manufacturer, according to the type inspection items in Table 5.If the type inspection is qualified, it means that the batch of products, that pass the exit-factory inspection, can be delivered to the user in whole batch. If the type inspection fails, it shall stop production, analyze the causes, take effective measures, until the type inspection is qualified, before restoring the production.

The products, which are produced in the period of unqualified type inspection, shall not leave the factory; the products, that have already left the factory, shall be recalled.

5.3.3 Type inspection requirements

Type inspection shall be carried out, in one of the following situations.

a) Trial type identification of new products or old products after trans-plant production;

b) After formal production, if there are major changes in structure, material, process, which may affect the performance of the product;

c) During normal production, type inspection shall be carried out at least once a year;

d) When there is a big difference between the exit-factory inspection results and the last type inspection;

e) When the national quality supervision agency requests type inspection.

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