GB/T 39856-2021Hot rolled titanium and titanium alloy seamless tubes (English PDF)

6.1 Inspection and acceptance

6.1.1 The product shall be inspected by the supplier or a third party, to ensure that the quality of the product meets the requirements of this document and the purchase order.

6.1.2 The buyer may inspect the received products, in accordance with the provisions of this document. If the inspection result is not in conformity with the provisions of this document and the purchase order, it shall be submitted to the supplier in written form, which will be settled, through negotiation, between the supplier and the buyer. For objections pertaining to external dimensions or appearance quality, they shall be filed within one month from the date of receipt of the product. For objections pertaining to other aspects, it shall be filed within three months from the date of receipt of the product.

6.2 Group-batch

Products shall be submitted for acceptance in batches. Each batch shall consist of products of the same designation, melting furnace number, specification, manufacturing method, state, as well as the same heat treatment furnace batch.

6.3 Inspection items and sampling

The inspection items and sampling methods of the products shall meet the requirements of Table 4.

a) Designation;

b) Specification;

c) Smelting furnace number or batch number;

d) State;

e) The number of this document (GB/T 39856).

7.2 Packaging, transportation, storage

The packaging, transportation, storage of the product shall comply with the relevant provisions in GB/T 8180.

7.3 Accompanying documents

Each batch of products shall be accompanied by accompanying documents, which shall include the supplier information, product information, number of this document (GB/T 39856), date of manufacture or packaging date. Meanwhile, it should also include:

a) Product quality guarantee:

- The main performance and technical parameters of the product;

- Product characteristics (including the characteristics of manufacturing process and raw materials);

- Responsibility for product quality;

- The quality certification obtained by the product, as well as the analysis and testing results of each item, which are checked and stamped by the supplier's technical supervision department;

b) Product certificate:

- Inspection items and their results or inspection conclusions;

- Batch size or batch number;

- Inspection date;

- The inspector's signature or seal;

c) During product quality control, the inspection report and finished product inspection report;

d) Instruction for use of product: correct handling, use, storage methods, etc.;