ASTM F714 is the standard specification for polyethylene pipe based on outside diameter, for sizes 3 in and larger; its companion ASTM D3035 covers the same construction from ½ in to 24 in. Together they are the basis of HDPE pressure pipe in the United States and Canada and are widely cited in Latin America and by North American engineering firms working abroad. If a project is designed in inches or names PE4710, it is an ASTM project.
The first difference from ISO 4427 is size. F714 pipe is made to IPS outside diameters — the same ODs as steel pipe, so 4 in is 4.500 in or 114.3 mm and 12 in is 12.750 in or 323.9 mm — or to DIPS, the ductile iron ODs, where 12 in is 13.200 in. Neither series coincides with metric sizes: there is no ISO DN that equals a 4 in IPS pipe, and a metric fitting will not fuse to it. The ratio of OD to wall is called DR rather than SDR, with the same values — DR 11, DR 17, DR 21.
The second difference is material designation. ASTM classifies the compound by a cell classification to ASTM D3350 — PE4710 corresponds to a cell class such as 445574C — and rates it by hydrostatic design basis (HDB): 1,600 psi at 73 °F for PE4710, equivalent to a PE100 grade. Pressure rating is then PR = 2 × HDB × DF ÷ (DR − 1) with a design factor DF of 0.63 for water; a DR 11 PE4710 pipe is rated 200 psi at 73 °F. Because the design factor and temperature basis differ from ISO's C = 1.25 at 20 °C, a DR 11 ASTM rating and an SDR 11 ISO PN are not directly comparable.
We extrude to ASTM F714 and D3035 in IPS sizes from 2 in to 63 in and DIPS on request, using PE4710 compound, and ship with fittings to ASTM D3261 and F1055 so the system is consistent. Specify IPS or DIPS explicitly: the two are not interchangeable and the wrong one is only discovered when the fusion machine clamps do not fit.
Key features
- Sizes 3 in and larger (D3035 for ½ in to 24 in), IPS or DIPS outside diameters
- DR series 7.3 to 32.5 — same ratio as SDR, different name
- PE4710 material, HDB 1,600 psi at 73 °F, cell classification per ASTM D3350
- Pressure rating by HDB and design factor 0.63, not by PN
- IPS and DIPS never match metric DN; fittings are size-series specific
Specifications
| Full title | Standard Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Outside Diameter |
|---|---|
| Size range | 3 in to 65 in (D3035: ½ in to 24 in) |
| OD series | IPS (iron pipe size) and DIPS (ductile iron pipe size) |
| DR series | 7.3, 9, 11, 13.5, 15.5, 17, 21, 26, 32.5 |
| Material | PE4710 (also PE3608, PE2708) per ASTM D3350 cell classification |
| Pressure rating | PR = 2 × HDB × DF ÷ (DR − 1); DF 0.63 water at 73 °F |
| Companion standards | D3035 pipe, D3261 butt fittings, F1055 electrofusion, F2620 joining, D3350 materials |