H40F46J浮球式衬胶、衬氟塑料止回阀

设计与制造按 Design and manufacture:GB12239
结构长度按 Structure length:GB12221
法兰连接尺寸按 Flange connection size:HG20592
试验与检验按 Test and inspection:GB/T13927
设计与制造按 Design and manufacture:GB12239
结构长度按 Structure length:GB12221
法兰连接尺寸按 Flange connection size:HG20592
试验与检验按 Test and inspection:GB/T13927
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