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Extension of certificates DIN EN 1090 and DIN EN ISO 3834
the welding certificate according to DIN EN 1090
and
the proof of quality requirements for welding according to the extent
specified in the annex according to DIN EN ISO 3834
the welding certificate according to DIN EN 1090
and
the proof of quality requirements for welding according to the extent
specified in the annex according to DIN EN ISO 3834