G941电动衬胶、衬氟塑料隔膜阀

设计与制造按 Design and manufacture:GB12239或BS5156
结构长度按 Structure length:GB12221或BS5156
法兰连接尺寸按 Flange connection size:HG20592或BS4504
试验与检验按 Test and inspection:GB/T13927或BS5156
设计与制造按 Design and manufacture:GB12239或BS5156
结构长度按 Structure length:GB12221或BS5156
法兰连接尺寸按 Flange connection size:HG20592或BS4504
试验与检验按 Test and inspection:GB/T13927或BS5156
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