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FM/UL Fire Sprinkler System Malleable Iron Galvanized Reducing Elbow of Pipe Fitting, Find Details and Price about Elbow 90 Degrees Gi Malleable Iron Pipe Fitting from FM/UL Fire Sprinkler System Malleable Iron Galvanized Reducing Elbow of Pipe Fitting - Maitolead Pipeline Technology(Tianjin)Co., Ltd.