ASTM F2788 / F2788M - 13

    Standard Specification for Metric-sized Crosslinked Polyethylene (PEX) Pipe

    Active Standard ASTM F2788 / F2788M | Developed by Subcommittee: F17.26

    Book of Standards Volume: 08.04


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    1. Scope

    1.1 This specification covers crosslinked polyethylene (PEX) pipe that is outside diameter controlled in metric pipe sizes 16 mm to 100 mm and inch pipe sizes 3 in. to 54 in., made in nominal pipe dimension ratios, and pressure rated for water at three temperatures (see Appendix X1). Included are requirements and test methods for material, workmanship, dimensions, burst pressure, hydrostatic sustained pressure, excessive temperature-pressure, environmental stress cracking, stabilizer functionality, bent-pipe hydrostatic pressure, oxidative stability in potable chlorinated water, and degree of crosslinking. Requirements for pipe markings are also given. The pipe covered by this specification is intended for buried pressure piping applications (such as, industrial and general-purpose pipelines, potable water pipelines, fire – extinguishing pipelines). This specification also includes carbon black requirements for PEX pipe used for aboveground pressure piping applications.

    1.2 The text of this specification references notes, footnotes, and appendixes, which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.

    1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

    Note 1Metric sized (SI units) pipe should only be joined with corresponding metric-sized fittings and inch-sized pipe should only be joined with corresponding inch-sized fittings. Inch sized fittings should not be used for metric sized pipe, and metric sized fittings should not be used for inch-sized pipe.

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D618 Practice for Conditioning Plastics for Testing

    D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement

    D1505 Test Method for Density of Plastics by the Density-Gradient Technique

    D1598 Test Method for Time-to-Failure of Plastic Pipe Under Constant Internal Pressure

    D1599 Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and Fittings

    D1600 Terminology for Abbreviated Terms Relating to Plastics

    D1898 Practice for Sampling of Plastics

    D2122 Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings

    D2765 Test Methods for Determination of Gel Content and Swell Ratio of Crosslinked Ethylene Plastics

    D2837 Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials or Pressure Design Basis for Thermoplastic Pipe Products

    D3895 Test Method for Oxidative-Induction Time of Polyolefins by Differential Scanning Calorimetry

    F412 Terminology Relating to Plastic Piping Systems

    F2023 Test Method for Evaluating the Oxidative Resistance of Crosslinked Polyethylene (PEX) Tubing and Systems to Hot Chlorinated Water

    ANSI Standard

    B36.10 Standards Dimensions of Steel Pipe (IPS)

    Federal Standard

    FED-STD-123 Marking for Shipment (Civil Agencies)

    Military Standard

    MIL-STD-129 Marking for Shipment and Storage

    ISO Standards

    ISO1167 Thermoplastics pipes, fittings and assemblies for the conveyance of fluids -- Determination of the resistance to internal pressure -- Part 1: General method

    ISO13760 Plastics pipes for the conveyance of fluids under pressure -- Miners rule ~ Calculation method for cumulative damage

    ISO4427 Plastic piping systems - Polyethylene (PE) pipes and fittings for water supply

    ISOR161-1690 Pipes of Plastic Materials for the Transport of Fluids (Outside Diameters and Nominal Pressures) Part 1, Metric Series

    PPI Standards

    PPITR-3 Policies and Procedures for Developing Hydrostatic Design Basis (HDB), Pressure Design Basis (PDB), Strength Design Basis (SDB), and Minimum Required Strength (MRS) Ratings for Thermoplastic Piping Materials or Pipe

    PPITR-4 PPI Listing of Hydrostatic Design Basis (HDB), Strength Design Basis (SDB), Pressure Design Basis (PDB) and Minimum Required Strength (MRS) Ratings for Thermoplastic Piping Materials or Pipe

    NSF Standard

    NSF/ANSI14 for Plastic Piping Components and Related Materials


    ICS Code

    ICS Number Code 23.040.20 (Plastic pipes)

    UNSPSC Code

    UNSPSC Code 40171500(Commercial pipe and piping)


    DOI: 10.1520/F2788_F2788M

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