Knowledge about pipelines,
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I have just started working with hydrocracking. What is the material of the pipes inside? What do 347, 321, 825, Q345R, P11, P22, and Lemo steel mean? I’m not quite sure.
Go and check the project’s pipeline material specifications, naming rules, the first page of the schematic diagram, and things like that.
I saw that. I just want to know specifically what conditions, temperature, and pressure they use. And the components they contain are different.
There should be corresponding material standards in that specification sheet; take a look!
These are the grades of the materials; you need to understand the classification of materials, such as carbon steel, alloy steel, stainless steel, etc. Then find the relevant specifications to see the medium, temperature, pressure, and so on used for each type of material. These one or two sentences can't convey the meaning. . .
One needs to pay close attention and accumulate knowledge on their own; there’s no need to rush – learn it bit by bit.*
Steel grades – each manufacturing standard allows for the production of several grades of steel. However, this molybdenum steel can be considered a type of steel; there are variants such as 15CrMo and 35CrMo.
Check the material grade table or the process design specifications; if they cannot be found, then use Baidu
For various grades, different materials and manufacturing processes are selected depending on the specific operating conditions
What you have listed are the steel grades, the material of the steel pipes, or in other words, the symbolic representations of the specific chemical element contents in those pipes. The specific material to be used must be determined by considering factors such as the medium, pressure, and environment, in order to select the appropriate material and corresponding standards for implementation.