I would like to ask about the classification of welds on container flanges and heads, as well as process qualification
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As shown in the figure above, it determines whether to calculate for butt welds or fillet welds. For welding qualification tests, does the test piece need to cover both the thickness of the cylinder and that of the flange? Thank you!
Classified as Category C welds, the weld assessment based on the cylinder thickness is sufficient.
This should cover 2 thicknesses. . .
This post was last edited by zjq1962 on 2018-10-10 08:11. The groove-cut weld should cover both thicknesses simultaneously. For fillet welds without grooves, the evaluation can cover any thickness.
After reading the above replies, I still don’t understand
It is not necessary to cover the flange thickness; the standard is specified in NB/T47014-2011, clause 6.1.5.5. However, for fillet welds with bevels, both thicknesses must be covered.
There is no standard answer; these types of welds are not standard welds. Weld evaluation only needs to cover the cylinder welds.
It seems to have bevels as well; at least there are chamfers.
Looking at the local area, it has a groove; there are at least two chamfers.
It seems some experts say that the groove after insertion isn’t considered a groove – is that what they mean?