20%RT patching location
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When inspecting the container at 20%, 10 sheets need to be applied to the ring seam – should they be applied evenly, or in 5 sheets each on the top and bottom, for a total of 10 sheets? Are there any requirements?
Generally, priority is given to areas where welds intersect or where there are gussets and other accessories covering the area: victory:
1. It is necessary to select welds to be welded by different welders； 2. The T-joint area of the weld must be included ； 3. Welds that may be overlapped must be included ； 4. Welds located close to the opening.