Process qualification: workpiece thickness issue
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For example, in the case of full penetration welding of a 30 mm thick tube sheet and a 7 mm thick cylinder shell, is it possible to determine through process evaluation whether a 7 mm wide butt weld will be sufficient?
It cannot be overlapped; a 7mm version can only cover base metal thicknesses of 1.5 to 14mm. At least 15mm is required for coverage.
Plate butt joint assessment; no restrictions on the coverage of fillet welds