Common detection methods for straight seam steel pipes

1. In the test results of straight seam steel pipes, if a certain item does not meet the requirements of the product standard, the unqualified ones should be picked out, and double the number of samples should be randomly taken from the same batch of straight seam steel pipes, and the unqualified items should be checked. recheck. If the re-inspection result is unqualified, the batch of straight seam steel pipes shall not be delivered. For the following inspection items, if the initial inspection fails, re-inspection is not allowed.

2. For straight seam steel pipes that fail the re-inspection results, the supplier can submit them for acceptance one by one; or conduct heat treatment again, and submit a new batch for acceptance.

3. If there is no special regulation in the product standard, the chemical composition of the straight seam steel pipe shall be checked and accepted according to the melting composition.

4. The inspection and acceptance of straight seam steel pipes shall be carried out by the technical supervision department of the supplier.

5. The supplier guarantees that the delivery of straight seam steel pipes complies with the provisions of the corresponding product standards. The buyer has the right to inspect and accept the products according to the corresponding product standards.

6. Straight seam steel pipes should be submitted for acceptance in batches, and the batching rules should comply with the provisions of the corresponding product standards.

7. The inspection items, sampling quantity, sampling location, and test method of straight seam steel pipe shall be by the provisions of the corresponding product standards.