EU Trademark Classification EU06 Metal goods 金属管道联轴节（12819） Class 06 Pipe couplings of metal 12819 金属管道联轴节 Chinese 金属管道联轴节 English Pipe couplings of metal Site ref. 12819 Class 06 Included in Harmonised Database (HDB), TM5 ID List, WIPO Madrid Goods and Services (MGS)