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Comparison of calculations for welded tees and perforated reinforcement

2009-02-11View Original

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The conditions are: design pressure of 6.3 MPa, design temperature of 80 degrees. The outer diameter of the main pipe is 60 mm with a thickness of 4 mm, while the outer diameter of the branch pipes is 48 mm with a thickness of 6 mm. When performing strength calculations for reinforcement due to the openings, using a cylinder with an inner diameter of 52 mm and branch pipes with an outer diameter of 48 mm, both the cylinder’s strength and the reinforcement for the openings meet the requirements. However, when using the welded tee component in SW6 for calculations, the results show that neither the main pipe nor the branch pipes meet the requirements. What is the reason for this? How should I calculate it?

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