GB/T 469-2023Lead ingots (English PDF)

5.1 Chemical composition

5.1.1 The chemical composition of lead ingots shall comply with the requirements in Table 1.

5.1.2 When lead is used to produce an alloy, which has an element listed in Table 1 as an additive element, the content of this element does not need to be limited by the maximum value specified in Table 1; it can be agreed upon by the supplier and the buyer.

5.2 Physical specifications

5.2.1 Lead ingots are divided into large ingots and small ingots. The small ingot is rectangular and trapezoidal, with a bundling groove at the bottom and protruding ears at both ends.

5.3 Surface quality

5.3.1 There shall be no slag, molten holes, granular oxides, inclusions, external contamination on the surface of lead ingots.

5.3.2 The lead ingot shall not have cold insulation; it shall not have flash burrs larger than 10 mm (trimming is allowed).

5.4 Others

If the buyer has special requirements for the chemical composition, physical specifications, surface quality, etc. of lead ingots, they can be negotiated by the supplier and the buyer.

7.1 Inspection and acceptance

7.1.1 Lead ingots shall be inspected by the supplier or a third-party quality supervision department, to ensure that the product quality complies with the provisions of this document; meanwhile the accompanying documents shall be filled in.

7.2 Group batching

7.2.1 Lead ingots shall be submitted for inspection in batches. Each batch shall be composed of products of the same designation and furnace number; the weight of each batch shall not exceed 150 t.

7.2.2 According to the requirements of the buyer, multiple production batches of the same designation are allowed to form an inspection batch. The batch size is as required by the buyer.

7.3 Inspection items

Each batch of lead ingots shall be inspected for chemical composition analysis, physical specifications, surface quality.

7.4 Sampling and specimen preparation

7.4.1 Production sampling

The specimens, which are used by the supplier for chemical composition analysis, can be taken from the liquid metal during casting or can be taken by other methods.

7.4.2 Product sampling and specimen preparation

7.4.2.1 Collection and preparation of chemical composition specimens of lead

ingots

7.5 Judgment of inspection results

7.5.1 The rounding of the impurity element test results and the representation and judgment of the rounded values shall be carried out, in accordance with the provisions of GB/T 8170.

7.5.2 If the chemical composition analysis results of lead ingots are inconsistent with the provisions of this document or the requirements of the order form, they will be deemed unqualified.

7.5.3 If the physical specifications and surface quality of the lead ingot are inconsistent with the provisions of this document or the requirements of the order form, the ingot will be deemed to be unqualified.

8.1 Marking

8.1.1 The trademark and batch number shall be cast or printed on each lead ingot.

8.2 Packaging

8.2.1 Small lead ingots shall be bundled and packed with packaging tapes of corresponding strength and not easy to rust. Large lead ingots are supplied as bare ingots.

8.2.2 If the buyer has special requirements for the packaging of lead ingots, they can be negotiated by the supplier and the buyer.

8.3 Transport and storage

8.4 Accompanying documents

Each batch of lead ingots shall be accompanied by accompanying documents stating.