ASTM D-2737 (SDR-PR) Based on Controlled Outside Diameter
This specification covers polyethylene pipe made in standard thermoplastic pipe dimension ratios and pressure rated for water. Pipe manufactured under this specification is based on a controlled outside diameter which is designed to match and mate with copper tube using copper tube size (CTS) compression couplings.
Pipe manufactured to this specification is described using a prefix-diameter ratio. The prefix for ASTM D-2737 is SDR.
The most common ratio under this specification is SDR-9. The definition of SDR (Standard Dimension Ratio) is the specific ratio of the average specified outside diameter to the minimum specified wall thickness.
SDR-9 service tubing is available in black, Super Service™ Blue and Reclaimed Water Purple.
Specifications
| PIPE | CALCULATED ID | OUTSIDE DIAMETER | MINIMUM WALL |
|---|---|---|---|
| ~0.681" | 0.875" +0.004" | 0.097" +0.010" | |
| ~0.875" | 1.125" +0.005" | 0.125" +0.012" | |
| ~1.069" | 1.375" +0.005" | 0.153" +0.015" | |
| ~1.263" | 1.625" +0.006" | 0.181" +0.018" | |
| ~1.653" | 2.125" +0.006" | 0.236" +0.024" |