Fire Gate Valve, Fire Check Valve, Water Flow Detector manufacturer / supplier in China, offering UL/FM 10MPa Metal Casting Ductile Iron Pipe Fittings Heavy Duty Flexible Grooved Coupling, 2 1/2 Inch Pipe Rigid Ductile Iron Grooved Coupling for Fire Fighting, Style 1nr Reducing Flexible Couplingdn32~DN200 1 1/4″ ~8″ 42.4mm~219.1mm and so on.
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