1. When a test result of welded steel pipe fails to meet the requirements of the product standard, the unqualified person shall be picked out and the unqualified item shall be reinspected from the same batch of API 5L Gr. B X46 Welded Steel Pipe by taking twice the number of samples at random.

　　If the reexamination result is not qualified, the batch welded steel pipe shall not be delivered.

　　The following inspection items are not allowed to be retested when they fail to pass the initial inspection.

　　2. For welded steel pipes with unqualified re-inspection results, the supplier may submit them for acceptance one by one, or re-heat-treat them for acceptance in a new batch.

　　3. If the product standard is not specified, the chemical composition of the welded steel pipe shall be checked according to the smelting composition.

　　4. The quality inspection and acceptance of welded steel pipe should be carried out by the technical and Quality Supervision Department of the supplier.

　　5.the supplier must ensure that the delivery pipe meets the requirements of the corresponding product standards. The buyer shall have the right to inspect and accept the products according to the corresponding product standards.

　　6. Welded steel pipes should be submitted for acceptance in batches, and the rules of group approval should meet the requirements of corresponding product standards.

　　7. The inspection items, sampling quantity, sampling position and testing method of welded steel pipe shall be in accordance with the relevant product standards. With the consent of the buyer, the hot-rolled welded pipe can be sampled in batches according to the rolling root array.

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