Why can’t square holes be made in pipes?
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This post was last edited by Benben Xuan on 2009-10-19 17:41. Why can’t square holes be made in pipes? ? ? 1. Please ask fellow users to provide examples of square-hole openings (preferably in the form of images), and explain the necessity of such holes. And indicate the operating conditions. 2. Please also have Haiyou summarize the disadvantages of square holes from various aspects such as usage, welding, and stress. A large reward is available if the above response is met.
This post was last edited by ms3210 on 2009-10-12 at 19:35. How do you handle the square-hole section? Should it be a straight square tube? It’s generally not done this way; doing so would likely lead to stress concentration issues. The welding requirements at the corners are too high. If connecting irregular-shaped pipes, would it be possible to use round holes combined with square shapes to create a round shape?
This post was last edited by ms3210 on 2009-10-13 09:55. There are also devices with square holes; for example, some discharge openings and observation ports, but they are generally round in shape, which prevents stress concentration.
It is mainly a problem of stress concentration; square openings have not been seen in pressure pipes. However, square openings are quite common in non-standard equipment. I think creating a square opening is simpler than creating a circular one; once a square shape is converted to a circular one, it can be connected to a circular tube.
Creating square holes in pipes is pointless; moreover, such holes cause stress concentration at the right angles, whether due to the parent pipe or welding, which in turn reduces the strength and stiffness of the parent pipe.
This post was last edited by ms3210 on 2009-10-18 at 17:21. The collection ports for condensate in gas main pipelines are square-shaped, of course, as the pressure in gas pipelines is low.
Make a round hole and then weld on a pipe that goes from round to square; this helps avoid stress concentration, so it’s better not to make it square
Holed openings: 1. Cause stress concentration; 2. Result in a larger weld joint area compared to round openings
Stress concentration – and then, why did the original poster drill square holes in the pipe? It’s awkward; is there really a need to use flanged connectors as a transition?
No square holes: 1 for easy connection and welding; 2 to relieve stress
What is the use of drilling square holes in pipes? Especially with heat pipes, the square holes don’t last long