Issues related to piping of copper alloy pipes and fittings
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Firstly, it seems that GB20801 does not provide allowable stress data for copper pipes; therefore, there is no basis for calculating the wall thickness of copper pipes； The second category is fittings for copper piping; there are relevant standards, such as standards similar to GB12459 ； Third is the selection of materials: what are the general principles for choosing the grades of copper and copper alloy pipes?
For general-purpose copper pipes, GB8033 can be used; the standard provides tables for material grades, wall thicknesses, and pressure ratings, eliminating the need for calculations. GB11618 shall be used for pipe fittings.
Thank you very much, but I forgot to mention the pressure aspect – GB11618 applies only to low-pressure applications. I would like to choose copper pipes and fittings with a pressure rating of over 10 MPa.
For high pressure, flanged or ferrule-type pipe fittings can be chosen.
Can flaring also meet high-pressure requirements?
The working pressure of flared pipe fittings for copper pipes can reach up to 16 MPa.