branch pipe base
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Regarding the standards for the branch stubs used in the welding of pressure pipelines, how should these standards be understood?
Size, material, along with the branch fitting standards, constitute the standard description. Refer to books such as Examples of Pressure Pipeline Piping Design, which contain standards for American standard branch pipe supports. However, the standard provided by the poster is NB/T 47008-2017, which applies to forged carbon steel and alloy steel components for pressure-bearing equipment; GDT025 is not a publicly available standard. It would be acceptable if it is a standard specific to branch pipe supports; if it isn’t such a standard, then a standard relevant to branch pipe supports needs to be provided.