Regarding the issue of the proportion of product welding specimens and non-destructive testing
Thread Content
For shell-and-tube heat exchangers, the material used for the tube side is TA9, while the material used for the shell side is Q345R. The design pressure for the shell side is 2.0 MPa, and that for the tube side is 0.5 MPa. In accordance with the JB/T4745 standard, for those with a design pressure of 1.6 MPa or higher, it is necessary to prepare welded test pieces of the product, and 100% non-destructive testing must be carried out on joints of types A and B. The question is that the material of the shell side cylinder of this equipment is not titanium; is it necessary to comply with the standard requirements?
It’s not necessary to follow a sequence; each chamber can be operated independently