Is it necessary for the wall thickness of the pneumatic valve air supply pipeline to be greater than 1 mm?
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The specifications require that the wall thickness of 12mm stainless steel gas supply pipes be 1.5mm. Isn’t the gas supply pressure fixed at 6 bar? What is the purpose of increasing the wall thickness? So, for air supply pipes with a larger diameter, such as those with a wall thickness of 20 mm, would 2 mm or 3 mm be required? A too thick wall thickness will also pose difficulties in on-site construction, right?
The wall thickness of pipes is not only for withstanding pressure. Small-diameter pipes are subjected to structural forces that are much greater than those generated by the pressure of the fluid. A stainless steel tube with a diameter of M12×1.5 can definitely withstand a pressure of 20 MPa without bursting. However, a support every 2 meters does not necessarily ensure it will not sag during use. For pipes with a diameter greater than 20 mm, there will definitely be people standing on them in certain areas. ……
There’s definitely no issue with withstanding pressure； For 100 kilograms of hydrogen, the wall thickness of DN15 is only 1.5 ； However, in addition to internal pressures, there are also issues such as external impacts and installation stresses; for projects that are meant to be of better quality, it is advisable to act with integrity.
There are really quite a few practical issues to consider; I’ve studied* it
There’s no need to worry about this; 6*1, 8*1, 10*1, 12*2, etc. – as the pipe diameter increases, it’s necessary to increase the wall thickness as well.
If it’s for design, 1mm is essential. There is also bending; if the wall thickness is thin, it will collapse when distorted.