Auto CompressorChina Ductile Iron Threaded/ Grooved Reducing Tee with FM/UL/CE Approved 300psi for Fire Protection Pipelines, Find details about China Ductile Reducing Tee, FM/UL Reducing Tee from Ductile Iron Threaded/ Grooved Reducing Tee with FM/UL/CE Approved 300psi for Fire Protection Pipelines