ISO 9606-1 2012 中文版焊工考试 第一部分 钢(3)

9.1 初次取证 ............................................................................................................................................................... 26 9.2 有效期的确认 ....................................................................................................................................................... 27 9.3 焊工资格证书延期 ............................................................................................................................................... 27 9.4 证书失效 ............................................................................................................................................................... 27 10  证书 ............................................................................................................................................................... 27 11  焊工考试标记 ................................................................................................................................................ 28 附录A ................................................................................................................................................................... 29 附录C ................................................................................................................................................................... 30 附录B ................................................................................................................................................................... 31