Calculate the pressure resistance value given the pipe diameter and wall thickness

Check API 5L or calculate using the strength formula yourself! 1# carfie

I truly thank Xiao Cao! I found a formula online; the calculation shows around 40 Mpa (including a safety margin for welding), and the design pressure for the pipeline is 10 Mpa, which should be sufficient. I might as well say this about others: I am a graduate of a vocational school in financial accounting; I’m completely clueless when it comes to technical tasks such as engineering design. To make a living, they took on jobs that did not match their educational qualifications. When faced with work-related difficulties, turning to the Internet for help is a last resort. Who would want to be bald when they have hair? I have posted two threads on this forum in recent days, and the indifferent treatment I’ve received is truly disheartening. As the saying goes, it’s better to teach someone how to fish than to give them fish; if one is already waiting for fish to save them in an emergency, giving them the skills to fish is still enough to be appreciated! It’s regrettable that the overwhelming majority of people passing by turn a blind eye. Is it because their skills aren’t yet refined enough for them to show themselves, or have they become indifferent to us mere, humble learners? If it’s the former, we should learn from each other and continue to communicate; if it’s the latter, then it’s worth reflecting on: what is the purpose of this forum, after all?

You can deduce this as follows: Calculation of the wall thickness for internal-pressure metal straight pipes: According to SH 3059-2001 \"General Principles for the Selection of Materials for Petrochemical Piping\", when S0 < Do/6, the calculated wall thickness for the straight pipe is: S0 = P·D0/(2tΦ+2PY). The actual wall thickness to be used for the straight pipe is: S = S0 + C. Here, S0 represents the calculated wall thickness of the straight pipe, in mm； P – Design pressure, MPa ； D0―― Outer diameter of the straight pipe, mm ； t – Allowable stress of the straight pipe material at the design temperature, MPa ； (Above 150°C, take 113 for Q235 and 163 for 16MnR) ； For ordinary stainless steel pipes, use 117); Φ – weld coefficient; for seamless steel pipes, Φ = 0.85 ； S – Wall thickness of the straight pipe, including additional margin, in mm ； C – Additional margin for straight pipe wall thickness, mm ； C=C1+C2 (C1: negative thickness deviation; 15% for pipes meeting national standards, 12.5% for those meeting American standards) ； C2: Corrosion margin, typically 2-3 mm for general equipment ； Pipe 1.5mm. Based on a service life of 10–15 years and for pipes under high pressure of 10 MPa, select a thickness of 3–4 mm. Y – temperature correction factor, to be chosen according to the table below. Below 482°C, the value of Y is 0.4. The value of P*Y is very small compared to 2tΦ, so it can be ignored. For a 2-mm pipe, the calculated value of S0 is 2 – 1.5 (corrosion margin, as mentioned earlier) = 0.5 mm. Using the formula above to perform reverse calculations, the result seems to be a bit high, around 8 MPa. I hope this helps you

Material 304, pipe diameter 12mm, wall thickness 2mm – what is the pressure rating in Mpa? Sometimes it’s because the information you provide is too limited. Take your question for example: you ask about the performance capabilities without even specifying the operating temperature. Who can possibly answer that? ? Temperature is a crucial parameter ； Moreover, I suggest that it’s better to spend some time studying on your own before asking questions. Everyone is busy; let’s not rely on excuses like the harshness of the world every time. Sometimes it’s not really like that.

There’s a formula; just calculate it and it’s done.

p=2RS/D, where R represents 50% of the material’s stress yield point; the stress yield point for 304 material is generally 210, S denotes the wall thickness, and D denotes the outer diameter

Made of 15GrMo material, with a pipe diameter of 159 mm and a wall thickness of 7 mm – what is its pressure resistance in Mpa?

What was said on floor 6 is correct – temperature plays a crucial role in the calculations. As temperature rises, the allowable stress decreases, which requires an increase in wall thickness. The forum isn’t visited every day, and only those who happen to see it and understand it can reply to you. People are fickle; when no one replies to a post on the forum, they start talking about how fickle people are and the necessity of such forums – overcomplicating things unnecessarily