ERA Factory Made ASTM sch40 PVC Pipe Fitting Reducing Bush With NSF Certificate copper reducing bushingnPVC pipe fittings product characteristicsnn1. High ring stiffness: The pipe wall adopts a reasonable hollow ring structure design, which greatly improves the ring stiffness of the pipe and can withstand greater environmental pressure under the same material.nn2. Low fluid resistance: the inner wall is smooth and the friction resistance is significantly less than that of concrete pipes. Practice has proved that under the same slope, the same flow rate can be achieved by using a smaller diameter double-wall corrugated pipe. Under the same pipe diameter, double-wall corrugated pipes can reduce the slope and effectively reduce the amount of excavation.nn3. Good connection tightness: The socket connection uses an elastic sealing ring, and the connection tightness is obviously better than that of metal pipes and concrete pipes.nn4. Excellent corrosion resistance: It has excellent corrosion resistance against acid, alkali, salt and other media, and its corrosion resistance is significantly better than that of metal pipes and concrete pipes.nn5. Simple construction: light weight, long length (fewer joints), low requirements for pipe trenches and foundations, convenient connection, fast construction, and low overall price.nn6. Long service life: The pipe has strong wear resistance and long service life.