Issue with wall thickness of exhaust manifold material
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There is a root exhaust pipe in one project, with a diameter of DN1400 and a pressure of 10 KPa. The main components of the exhaust gas are toluene, hydrogen, acetylene, etc. The pipe material is S30408; I’m not sure what wall thickness to use. It seems that 1–2 millimeters should be sufficient according to formulas, but I’m not sure if there are any other regulatory requirements. Please advise. Thank you!
The diameter is large; when considering the internal pressure, it is also necessary to take into account the rigidity of the pipe itself, otherwise its own weight will crush the pipe.
First, consider the minimum wall thickness requirement for DN1400 steel pipes; second, consider the pipe length and the method of support (for example, whether reinforcement rings should be used if the pipeline is very long—similar to what is done with the cylinders of some thin-walled equipment)
In addition to considering strength, stiffness should also be taken into account
It’s not that complicated actually. Whether seamless pipes are used (which is unlikely) or welded pipes (usually spiral-welded pipes), it is all based on standard specifications. These specifications specify the minimum wall thickness for pipes depending on their diameter, pressure, and temperature. Just select it this way.
The diameter is really large; as mentioned by the person on floor 1.2, it’s necessary to take everything into consideration, otherwise the weight alone won’t be bearable. I’ve learned that