GB/T 21181-2017Secondarily lead and lead alloy ingots (English PDF)

3.1 Product classification

The chemical composition of secondarily lead and lead alloy ingots is divided

into 7 designations. ZSPb99.994, ZSPb99.992, ZSPbSb1, ZSPbSb2,

ZSPbCa, ZSPbSn1, ZSPbSn2.

3.2 Chemical composition

3.2.1 The chemical composition of secondarily lead and lead alloy ingots

shall comply with the provisions of Table 1.

3.2.2 When the purchaser has special requirements for alloying elements

5.1 Inspection and acceptance

5.1.1 The secondarily lead and lead alloy ingots shall be inspected by

supplier's technical supervision department so as to ensure that the product

quality complies with the provisions of this Standard or purchase order (or

contract) and fill in the quality certificate.

5.1.2 The purchaser shall inspect the product received according to the

provisions of this Standard. If the inspection results fail to comply with the

provisions of this Standard or purchase order (or contract), the purchaser

shall put forward to the supplier within 15 days after the product is received. It

shall be solved by the supplier and the purchaser via negotiation. If arbitration

is required, the sampling for arbitration shall be carried out by the supplier

and the purchaser.

5.2 Batching

5.2.1 The secondarily lead and lead alloy ingots shall be submitted in

batches for inspection. Each batch shall consist of the products of same smelt

number. The batch shall not exceed 120 t.

5.2.2 According to purchaser's needs, allowing a number of batches of the

same designation to form an inspection batch. The batch size shall be carried

out according to purchaser's requirements.

5.3 Inspection items

Each batch of secondarily lead and lead alloy ingots shall be subjected to the

inspections of chemical composition and surface quality.

5.4 Arbitration sampling and sample preparation

5.4.1 Arbitration sample quantity. extract 2% of secondarily lead and lead

alloy ingots at random as sample ingot. The total number of sample ingot

shall be multiple of 6 for easy grouping. When there is less than 6 after

grouping, it shall make up from the secondarily lead and lead alloy ingots but

it must not discard.

5.4.2 Arbitration sampling method. make each 6 extracted sample ingots as

a group. Take a sample by drilling or sawing. During drilling or sawing, it must

not use any lubricant. Its speed must not oxidize the sample. Sampling shall

remove the skin. The drilling, sawing depth must not be less than 2/3 of ingot

thickness. Details are as follows.

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