Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
D2239-22 – Standard Test Method Technical Guide
ASTM D2239-22 establishes the comprehensive requirements for polyethylene (PE) plastic pipe manufactured with a standard inside dimension ratio (SIDR) and a designated pressure rating (PR) for water service. Controlled inside diameter (CID) pipe ensures consistent flow characteristics and hydraulic performance, making this specification a cornerstone for engineers designing municipal water mains, irrigation systems, and industrial process piping.
⚠ Standard Unit System: Section 1.2 of the standard dictates that inch-pound units are regarded as the standard. SI unit values provided in parentheses are mathematical conversions for informational purposes only.
🎯 Scope and Material Requirements
The specification covers PE pipe pressure rated for water, detailing requirements for PE compounds, workmanship, dimensions, elevated temperature sustained pressure, and burst pressure. The pipe must conform to the applicable cell classification requirements of ASTM D3350.
For potable water applications, the scope directs users to consult AWWA C901 and PPI TN-49. Additionally, the Oxidative Resistance Classification (CC# rating) from NSF International provides critical data for assessing suitability in chlorinated water environments.
📐 Dimensions and Pressure Classifications
Pipe is designated by its Standard Inside Dimension Ratio (SIDR), calculated as the specified inside diameter divided by the minimum wall thickness. The SIDR directly correlates to the Pressure Rating (PR) of the pipe. The following table provides representative dimensional requirements for a standard 6-inch nominal inside diameter pipe:
| 📏 SIDR Designation | 🟦 Pressure Rating (PR), psi | 🎯 Nominal Inside Dia. (in.) | 📐 Minimum Wall Thickness (in.) |
|---|---|---|---|
| 7.3 | 250 | 6.000 | 0.822 |
| 9.3 | 200 | 6.000 | 0.645 |
| 11.5 | 160 | 6.000 | 0.522 |
| 15.0 | 125 | 6.000 | 0.400 |
| 17.0 | 100 | 6.000 | 0.353 |
| 21.0 | 80 | 6.000 | 0.286 |
NOTE: Wall thicknesses and pressure ratings are dependent on the hydrostatic design basis (HDB) of the specific PE material. Consult the full standard for all sizes and tolerance requirements per ASTM D2122.
⚙️ Performance Testing and Validation
ASTM D2239-22 mandates strict testing protocols to validate the long-term strength of the pipe. The sustained pressure test per ASTM D1598 and the short-time burst test per ASTM D1599 are fundamental for establishing the pressure rating. The Hydrostatic Design Basis (HDB) is determined following ASTM D2837.
Material quality is verified through standard test methods including melt flow index per ASTM D1238, carbon black content per ASTM D1603 or D4218, and oxidative resistance for chlorinated water per ASTM F2263. Pipe markings must be clearly applied, including the standard designation (D2239), the SIDR, the PR, and the manufacturer’s identifier. Color coding stripes should comply with the APWA Uniform Color Code.
🔬 Critical Testing: The elevated temperature sustained pressure test (Section 7 of the standard) is a stringent pass/fail criterion that validates the pipe’s material stabilization and long-term hydrostatic integrity. Specifiers should pay close attention to the specific temperature and stress points outlined therein.
❓ Frequently Asked Questions
🔍 What is the primary distinction of ASTM D2239 SIDR-PR pipe?
SIDR-PR pipe is defined by a controlled inside diameter. This makes it ideal for flow-critical applications where maintaining a precise internal cross-sectional area is paramount, as opposed to SDR pipe which is controlled by the outside diameter.
📌 What material specification governs the PE compounds used?
The PE compounds must meet the cell classification requirements of ASTM D3350. This ensures the raw material maintains the necessary density, melt index, tensile strength, and oxidative stability for the intended service.
⚡ Which test methods establish the pressure rating of the pipe?
The pressure