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API 609 ASME CE DN200 PN10 GGG40 Ductile Iron 2507 Duplex Steel PTFE Full-Lined Wafer Type Concentric Line Soft Seal Butterfly Valve
TIANYU API 609 ASME B16.34 CE DN200 PN10 GGG40 Ductile Iron 2507 Duplex Steel PTFE Full-Lined Wafer Type Concentric Line Soft Seal Butterfly Valve for…
