If one or two samples do not meet the required requirements, the manufacturer may choose to intercept the samples on two steel pipes added to the same test batch for re-examination. If these samples meet the required requirements, all steel pipes in the test batch shall be available except for the sample tubes initially selected. If any of the retry samples do not meet the required requirements, the manufacturer may choose to test the remaining steel pipes in the test batch root-by-root sampling. You can also choose to any one unqualified tube, using the same end of the return cut and add two samples of the method for re-examination. If the samples are taken in accordance with the original test requirements, the steel pipe is received. Re-cutting and re-examination are not allowed. The samples for re-examination shall be intercepted in accordance with the requirements of Tables 19, 20 and 10.2.3.6. If applicable, reprocessing should be defined in accordance with 10.2.11.
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