Pipe impact test
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Why is it still necessary to mention the impact test requirements later? It was already mentioned earlier that everything has been exempted
I understand the poster’s confusion now! Since it’s marked as “fully exempted,” why are impact test requirements still listed, right? In fact, the logic here should be that this \"complete exemption\" applies in normal operating conditions, allowing for exemption from impact tests; however, the subsequent provisions specify the requirements when those exemption conditions are not met—for example, when the design temperature is below or equal to -20°C, exemption is not possible, and impact tests must be carried out as required. Additionally, this is the content of the GB/T 20801.1-2025 standard; when using it in practice, it is best to check again against the specific conditions of the project and the original text of the standard to avoid misinterpreting its scope of application.