What does SDR 35 pipe mean?

SDR stands for Standard Dimension Ratio. It’s the ratio of the outside diameter of a pipe to the pipe wall thickness. In other words pipe that is rated SDR 35 has a diameter 35 times larger than its wall thickness; SDR 11 has an outside diameter 11 times larger than its wall thickness and so on.Click to see full answer. Just so, what does SDR pipe stand for?Standard dimension ratio (SDR) is a method of rating a pipe’s durability against pressure. The standard dimension ratio describes the correlation between the pipe dimension and the thickness of the pipe wall. Common nominations are SDR11, SDR17 and SDR35. Pipes with a lower SDR can withstand higher pressures.One may also ask, what is the difference between SDR 26 and SDR 35? term SDR 35, from a strength classification requirement for PVC pipe, requires a minimum pipe stiffness of 46 psi at 5% deflection, for SDR 26 – 115 psi, and for SDR 23.5 – 153 psi. The key to requiring a particular SDR for plastic pipe is no different than for other pipe products such as (rigid) concrete pipe. One may also ask, what is the OD of SDR 35 pipe? SDR-35 PVC pipe comes in sizes ranging from 4 to 15 inches. The 4-inch size has an outside diameter of 4.215 inches, while the 6-inch measures 6.275 inches, the 8-inch measures 8.4 inches, the 10-inch measures 10.5 inches, the 12-inch measures 12.5 inches and the 15-inch measures 15.3 inches.What is SDR 35 pipe made of?Specification: Pipe shall be manufactured from virgin rigid PVC (polyvinyl chloride) vinyl compounds with a cell class of 12364 as identified in ASTM D 1784. The requirement of this specification are intended to provide pipe suitable for non-pressure drainage and surface water.