2014最新
NB/T ××××—×××× 目 次
前言 ····························································································································································· II 1 范围·························································································································································· 1 2 规范性引用文件 ······································································································································ 1 3 技术条件 ·················································································································································· 1 4 制造和装配公差 ······································································································································ 2 5 检查和验收 ·············································································································································· 4 6 标志、油漆和包装 ··································································································································· 4 附录A（规范性附录）搪瓷管验收要求 ······································································································· 5