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自贡比特阀门有限公司
Pipeline Ball Valve-Reduced Bore High-Performance PN 8 Mpa - Okorder.com
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DOUBLE PISTON EFFECT TRUNNION BALL VALVES
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Val-Matic Valve on X: "Our #valmatic QuadroSphere® Ball Valve has an optional double piston effect seating. Learn more at: https://t.co/WWyh5ZJmlG https://t.co/lNl3MITyA6" / X
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Double Block and Bleed Valves - True Meaning by Garza Mechanical Lead of Static Equipment Engineering Group at ExxonMobil Development Company
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China Double Piston Effect Ball Valve Suppliers, Manufacturers, Factory - Kemus
