What does the pipe material in the PID diagram mean?
Thread Content
What are the materials of the pipes in the PID diagram? What do codes like B2, K1, B3S, B3H mean? For example, what does B3H mean in 350-AM-311704-B3H-15F-T? I know the rest; I only know that B is high-quality carbon steel. What material is B3H? And what is 341? What does that mean?
This B doesn’t necessarily mean that here. .
So what does that mean? Could you give me some advice?
This post was last edited by hamiltontai on 2015-10-30 at 15:29. Diameter: 350-AM-311704-B3H-15F-T; Medium: AM, likely ammonia. Pipe segment number: 311704. I think B3H refers to the pressure rating, but to determine exactly what level it represents, it’s necessary to consult the relevant regulations, or check if there are any examples on the PID homepage. . I don’t know what 15F is; T might be adiabatic. . .
Without design specifications, such guesses are meaningless and may mislead you. Check the instructions on the first few pages before PID; the answers are there.
B3H is a pipeline material grade, right? Generally represents the material and pressure rating. The B mentioned by the original poster, which refers to high-quality carbon structural steel, may not be applicable in this case. Check the PID homepage or the material grade table.
B3H is the pipeline grade code; for its specific meaning, refer to HG/T 20646-1999 \"Specifications for the Design of Pipeline Materials in Chemical Plants\".
He might have just started using it and doesn’t know about the homepage image. This really can’t be guessed arbitrarily; different companies are indeed different. His version is very different from mine, but it seems to include those same few pieces of information