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Fire Fighting Pipeline System Pipe Fittings Grooved Fittings with UL/FM - China Grooved Fittings, Grooved Pipe Fittings | Made-in-China.com
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Cast Iron Pipe Fittings at Best Price in Weifang | Weifang Changsheng Pipe Co., Ltd.
UL FM Rigid Groove Joint Grooved Fittings Ductile Iron Flexible Coupling for Fire Fighting - China Ductile Iron Grooved Pipe Fitting, Reducing Coupling | Made-in-China.com
Di Fittings Ductile Iron
Grooved Fittings for Fire Fighting System: Type and Function
