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  1. ENGMechanical

    Definition of material of tube by flow?

    Kindly I ask for my friends of this forum. I'm studing about how define the material of pipe by inner flow? What procedures are used? I consider the variables, pressure, temperature, flow, and concepts of thermodynamics and fluid mechanics! OK. As an example: Using a chemical compatibility...
  2. ENGMechanical

    A good criterion for selection of Flange Joints

    Good friends, about "Gasket flange"! I believe that this question will be usefull for others too. When we will select a Gasket Flange... So, the aske is: Is there a "Criterion for selection of Flange Joints"? What would be the formula, theme, material in fluid mechanics, to have an absolute...
  3. ENGMechanical

    About selection of valves and process and not a constructive

    I opened this topic for discussion on the criteria for use of valves. Usually there is always only the literature on the constructive part of the valves, and almost never on the criteria for selection and use of valves. Does anyone know any simple criterion or book, or form that describes a...
  4. ENGMechanical

    Compatibility of materials by ASTM

    About compatibility between materials! If someone can help me, thank you very much. Often in my course I doubt this arises. What are the criteria to determine the compatibility between materials? For example: A 216 or WCC (GR.B) is compatible with A 350 LF2 Gr.1?? I used as a criterion: The use...
  5. ENGMechanical

    P&ID

    Hello friends. Some one already use this CAD, P&ID? If yes, please, because perhaps this doubts can help others too. Is about the TOOLBAR. When we insert figures on principal screen, so the question is: "Can we insert this blocks following a scale determinated by us?" Example: I'm draw in a...
  6. ENGMechanical

    How weld G-15 materials?

    Some one already work with G-15 Material? Perhaps is of DIN. How can i weld it? What weld i use for? Tank's EDY.
  7. ENGMechanical

    Production of Ammonia on small scale

    Friends, I’m with an idea for an ammonia plant. In this case, a small scale. That is, develop a factory since the beginning of ammonia in reduced scale. So my question is: Has anyone seen any case of ammonia production on a small scale? There is some inconvenience, trap or critical detail that...
  8. ENGMechanical

    Production of Ammonia on small scale

    Friends, I’m with an idea for an ammonia plant. In this case, a small scale. That is, develop a factory since the beginning of ammonia in reduced scale. So my question is: Has anyone seen any case of ammonia production on a small scale? There is some inconvenience, trap or critical detail that...
  9. ENGMechanical

    Studing ASTM

    I'm starting studing ASTM, but i believe it unorganized some times, because of so lot data. Some one know how can i organize my read? Exist a index or good separation by kind of material? I not have ASTM books. Tanks.

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