资源介绍:  

This European Standard specifies the methods of specimen preparation, test procedures and their main objectives, for the macroscopic and microscopic examination of welds.

This European Standard has been prepared by Technical Committee CEN/TC 121, Welding, the Secretariat of which is held by DS.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 1997, and conflicting national standards shall be withdrawn at the latest by April 1997.

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