SOUNDPROOF PIPE FOR DRAINAGE AND CONNECTION PIPING

摘要

PURPOSE: A soundproof pipe for a drainage and connection piping is provided to reduce the noise of the drainage and improve living environment. CONSTITUTION: A soundproof pipe for a drainage is composed of an inner PVC pipe(3), an outer PVC pipe(5), and air layers formed between the inner and outer PVC pipes. The air layer is communicated with a drainage(2).