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GB 12232-89 General valve flange connection iron gate valve
Introduction GB 12232-89 General valve flange connection cast iron gate valve is a kind of valve commonly used in the chemical industry. By running the the valve gate up and down, the valve can be opened and closed. The GB 12232-89 General valve flange connection cast iron gate valve, due to its ......
tags: valve gate cast valve gate flange
1034
Sophia
Beiyang University
Beiyang University Beiyang University holds a long and distinguished history. Located in Tianjin, China, the university has a long legacy of fostering innovative teaching and research. From its founding in 1895, Beiyang University was one of the earliest modern universities in China. It maintaine......
tags: university beiyang has bnu beijing normal
1053
Oliver
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