Questions regarding the calculation of reinforcement strength
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According to GB/T20801-2020, for a steam pipeline at 3.8 MPa and 385 degrees, the reinforcement area for DN400 is (406.4*17.5); since a direct opening of DN25 is present, reinforcement is required. For DN65, with an opening of DN25, no reinforcement is needed. Why is this?
Wait for the big shot {:1_90:}
When welding a DN25 branch pipe to a DN65 main pipe, reinforcement calculations are required. The standard you’re referring to says that no calculation is needed, right? Please provide it.
No, I mean my calculations show that the reinforcement area is sufficient; no additional reinforcement measures are needed. . I’m asking why larger pipes need reinforcement while smaller ones don’t; there seems to be a difference when it comes to straight pipes
It’s not the case that only large pipes need reinforcement while small pipes don’t; the requirement depends on whether there are openings, and calculations must be done first before a decision can be made.