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ASTM A795 Gr. a/ASTM A53 Gr. B with UL/FM Certificate Fire Pipe/ Fire Sprinkler Pipe/ Fire Fighting Pipe Material/Fire Hydrant Stand Pipe/Fire Resistant Pipe - China Fire Pipe, Fire Sprinkler Pipe | Made-in-China.com
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Ventilation pipes in black insulation material and fire sprinkler on red pipe are hanging from the ceiling inside new building. Stock Photo | Adobe Stock
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Source Made In China Red Paint Fire Sprinkler System Building Material Galvanized Pipe For Fire Fighting on m.alibaba.com