1.1 This specification covers outside diameter-controlled cross-linkable polyethylene (CX-PE) pipe produced in sizes DN 25 to 630 and NPS 1 to 24 in various dimension ratios. Included in this specification are requirements and test methods for long-term hydrostatic strength, hydrostatic design basis, hydrostatic burst pressure, hydrostatic sustained pressure, ultraviolet (UV) weathering resistance, initial and ultimate degree of cross-linking, workmanship, and marking. 1.2 This specification shall not be applied to cross-linked products, specifically PEX pipe or tubing.
Keywordscross-linkable polyethylene; CX-PE; cross-linked polyethylene; hydrostatic stress; PEX; pipe; pressure; energy piping
Cross-linkable PE pipe has no specification at this time. There are users who take advantage of the properties of cross-linkable PE to cross-link pipes after they have been installed or perform butt fusion on the pipe to join it. The most pressing need for this standard is to provide standardized stock material that may be converted into fittings, which then may be cross-linked. It is very difficult to produce large dimension fittings from PEX but much easier to do so using PE or cross-linkable PE.
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top