NS-EN ISO 3834-5:2021现行
Quality requirements for fusion welding of metallic materials — Part 5: Documents with which it is necessary to conform to claim conformity to the quality requirements of ISO 3834-2, ISO 3834-3 or ISO 3834-4 (ISO 3834-5:2021)
出版：Norwegian Standards (Norges Standardiseringsforbund)
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