What does Dr stand for in pipe?

Dimension ratio is an important but often misunderstood concept for PVC pipe. Some of the confusion arises because of the use of both “Dimension Ratio” (DR) and “Standard Dimension Ratio” (SDR) in product standards.

What material is SDR?

SDR stands for Standard Dimension Ratio. SDR is the ratio of the outer diameter to the thickness of the PE pipe, which is one of the characteristics of the Polyethylene pipe, and the pipes can be sorted according to the standard tables accordingly.

What PSI can poly pipe hold?

Comparable 1″ Poly pipe is rated to withstand 100 PSI. In fact, to achieve the same pressure rating as PVC, the walls of poly would have to be 2 times thicker.

What is SDR in plastic pipe?

standard dimension ratio
The terms “standard dimension ratio” (SDR) and “dimension ratio” (DR) refer to the same ratio—i.e., the ratio of a pipe’s average outside diameter to its minimum wall thickness.

What is AWWA C900?

The AWWA C900-2016 standard provides minimum manufacturing, verification, and marking guidelines for 4 inches through 60 inches PVC pressure pipe and fabricated fittings. Specifically, it is concerned with issues such as permeation, pressure tolerance, and quality control.

What does DR18 mean?

Dimension Ratio The pipe DR is defined to be the ratio of the pipe outside diameter to the pipe minimum wall thickness. For example, a DR 18 C900 pipe would have an outside diameter equal to 18 times its wall thickness.

What are the dimensions of the SDR 11?

SDR 11 Dimensions TRADE SIZE PART NUMBER AVEERAGE I.D. (INCHES) AVERAGE O.D. (INCHES) WALL (INCHES) 3/4” PDXN0750 0.839 1.050 0.095 1” PDXN1000 1.051 1.315 0.120 1 1/4” PDXN1250 1.338 1.660 0.151 1 1/2” PDXN1500 1.534 1.900 0.173

What is SDR 11 pipe used for?

Basically it is used as a measurement of the pipe’s strength. So SDR 11 pipe is not a TYPE of pipe, it’s just a designation as to it’s ability to hold pressure. SDR 11 pipe is rated for about 130 psi internal pressure. Many different materials can be used to manufacture a SDR 11 pipe, HDPE, ABS, PVC, CPVC, and others.

What is SDR (standard dimension ratio) in piping?

Pipes with a lower SDR can withstand higher pressures. For the people who don’t know, SDR or “Standard Dimension Ratio” is the ratio of pipe diameter to wall thickness (SDR = D / s); where D = pipe outside diameter (mm, in) s = pipe wall thickness (mm, in).

What size SDR is used for yellow PE underground gas pipe?

The most common SDR for yellow PE underground gas pipe is SDR-11 and it is the size we offer at PexUniverse. IPS (Iron Pipe Size) and CTS (Copper Tube Size) indicate which dimensional standard PE pipe uses.