HB 5974-1996 过隔板带密封垫圈直通管接头 ＬＹ１２－ＣＺ

HB 5974-1996 The straight through pipe connector with sealing washer and gasket through the partition wall is LY12-CZ. (Note: This translation assumes the context of the original sentence and the context of the connector type "LY12-CZ" in Chinese. Please refer to the context provided by the original sentence and further research if needed.)