1、Designation: F2905/F2905M 13Standard Specification forBlack Crosslinked Polyethylene (PEX) Line Pipe, Fittingsand Joints For Oil and Gas Producing Applications1This standard is issued under the fixed designation F2905/F2905M; the number immediately following the designation indicates the yearof orig
2、inal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers outside diameter controlled,pressure
3、rated, black metric-sized and IPS-sized crosslinkedpolyethylene (PEX) pipe, fittings and joints, made in pipedimension ratios ranging from 6 to 17. Included are require-ments and test methods for material, workmanship,dimensions, burst pressure, hydrostatic sustained pressure,stabilizer functionalit
4、y, bent-pipe hydrostatic pressure, degreeof crosslinking, and chemical resistance. Requirements for pipeand fittings markings are also given. The pipe, fittings andjoints covered by this specification are intended for pressure ornon-pressure oil and gas producing applications to conveyfluids such as
5、 oil, dry or wet gas, gas gathering, multiphasefluids, and non-potable oilfield water. This specification doesnot cover pipe for gas distribution applications.1.2 The text of this specification references notes, footnotes,and appendixes, which provide explanatory material. Thesenotes and footnotes (
6、excluding those in tables and figures) shallnot be considered as requirements of the specification.1.3 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard. Thevalues stated in each system may not be exact equivalents;therefore, each system shall be
7、 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 withcorresponding metric sized fittings, and inch sized pipe should only bejoined with corresponding inch sized fittings. In
8、ch sized fittings should notbe used for metric sized pipe, and metric sized fittings should not be usedfor IPS inch sized pipe.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish a
9、ppro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD792 Test Methods for Density and Specific Gravity (Rela-tive Density) of Plastics by Displace
10、mentD1505 Test Method for Density of Plastics by the Density-Gradient TechniqueD1598 Test Method for Time-to-Failure of Plastic PipeUnder Constant Internal PressureD1599 Test Method for Resistance to Short-Time HydraulicPressure of Plastic Pipe, Tubing, and FittingsD1600 Terminology forAbbreviated T
11、erms Relating to Plas-ticsD1603 Test Method for Carbon Black Content in OlefinPlasticsD2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsD2290 Test Method for Apparent Hoop Tensile Strength ofPlastic or Reinforced Plastic PipeD2765 Test Methods for Determination of Gel C
12、ontent andSwell Ratio of Crosslinked Ethylene PlasticsD2837 Test Method for Obtaining Hydrostatic Design Basisfor Thermoplastic Pipe Materials or Pressure Design Basisfor Thermoplastic Pipe ProductsD4218 Test Method for Determination of Carbon BlackContent in Polyethylene Compounds By the Muffle-Fur
13、nace TechniqueF412 Terminology Relating to Plastic Piping SystemsF1055 Specification for Electrofusion Type PolyethyleneFittings for Outside Diameter Controlled Polyethyleneand Crosslinked Polyethylene (PEX) Pipe and TubingF1948 Specification for Metallic Mechanical Fittings forUse on Outside Diamet
14、er Controlled Thermoplastic GasDistribution Pipe and TubingF2619 Specification for High-Density Polyethylene (PE)Line Pipe1This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.68 on EnergyPiping Systems.Curre
15、nt edition approved Aug. 1, 2013. Published September 2013. DOI:10.1520/F2905-132For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page
16、onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.2 Federal Standard:3FED-STD-123 Marking for Shipment (Civil Agencies)2.3 Military Standard:3MIL-STD-129 Marking for Shipment and Storage2.4 ISO Standards:4ISO 1167 T
17、hermoplastics pipes, fittings and assemblies forthe conveyance of fluids Determination of the resis-tance to internal pressure Part 1: General method ISOISO 14531-2 Plastics pipes and fittings Crosslinkedpolyethylene (PE-X) pipe systems for the conveyance ofgaseous fuels Metric series Specifications
18、 Part 2:Fittings for heat-fusion jointingISO 14531-3 Plastics pipes and fittings Crosslinkedpolyethylene (PE-X) pipe systems for the conveyance ofgaseous fuels Metric series Specifications Part 3:Fittings for mechanical jointing (including PE-X/metaltransitions)2.5 PPI Standards:5PPI TR-3 Policies a
19、nd Procedures for Developing Hydro-static Design Basis (HDB), Pressure Design Basis (PDB),Strength Design Basis (SDB), and Minimum RequiredStrength (MRS) Ratings for Thermoplastic Piping Mate-rials or PipePPI TR-4 PPI Listing of Hydrostatic Design Basis (HDB),Strength Design Basis (SDB), Pressure De
20、sign Basis(PDB) and Minimum Required Strength (MRS) Ratingsfor Thermoplastic Piping Materials or PipePPI TR-9 Recommended Design Factors and Design Coef-ficients for Thermoplastic Pressure Pipe3. Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nology F412, and abbreviations are in
21、 accordance with Termi-nology D1600, unless otherwise specified. The abbreviation forcrosslinked polyethylene is PEX. Plastic pipe denotes a par-ticular diameter schedule of plastic pipe that is outside diam-eter controlled.3.2 Definitions of Terms Specific to This Standard:3.2.1 crosslinked polyeth
22、ylene, nmolecular chains chemi-cally connected through irradiation with high-energy electronbeams, or chemical agents such as organic peroxides or silanes.3.2.2 multiphase fluid, noil, gas, and water in any combi-nation produced from one or more oil or gas wells, orrecombined oil or gas well fluids
23、that may have been separatedin passing through surface facilities.3.2.3 oilfield water, nfresh or salt water transported bypipeline, regardless of purity or quality, from wells or surfacelocations for the purpose of providing water injection tounderground reservoirs; or disposing of waste water from
24、hydrocarbon or gas production, processing, or storage facili-ties.3.2.4 PEX pipe material designation codeThe PEX pipematerial designation code shall consist of the abbreviation forcrosslinked polyethylene (PEX) followed by four Arabic digitsas shown in Table 1, and as defined in Terminology F412 fo
25、rPEX pipe materials.3.2.5 production run, nthe continuous extrusion of pipe ofa specific diameter, wall thickness and material compound.3.2.6 sample, npipe or an element of pipe that representsa quantity of pipe and provides a specimen or specimens fortesting.3.2.7 specimen, npipe or an element of p
26、ipe that issubjected to test.4. Pipe Classification4.1 GeneralThis standard covers black PEX pipe that ispressure rated based on HDB at 73F 23C and 200F 93C.Pressure ratings for temperatures between 73F 23C and200F 93C are determined by temperature interpolation inaccordance with PPI TR-3.4.2 Classi
27、ficationPEX pipes are classified by their PEXpipe material designation codes as shown in Table 1.5. Materials5.1 GeneralPEX pipes, meeting the requirements of thisspecification, are defined by means of (1) degree of crosslink-ing per 6.7, and (2) long-term strength tests per Test MethodD2837 to dete
28、rmine HDB per Table 1. The HDB is a propertyof the PEX compound, which is used to make the PEX pipe.5.2 Basic MaterialsPEX pipe and fittings shall be madefrom PE compounds, which have been crosslinked byperoxides, azo compounds, or silane compounds in extrusion,or by electron beam after extrusion, s
29、uch that the pipe meetsthe performance requirements of Section 6. The materials,procedure for mixing, and the process for crosslinking shallresult in a product with Hydrostatic Design Basis ratings equalto or better than those shown in Table 1, when determined inaccordance with procedures no less re
30、strictive than those ofTest Method D2837, and the PEX material shall have a PlasticsPipe Institute (PPI) long-term hydrostatic design stress andhydrostatic design basis rating. See Appendix X1 for additionalinformation on PPI hydrostatic stress ratings.5.3 PEX Pipe Material Designation CodeThe PEX m
31、ate-rial meeting the requirements of this specification shall bedesignated PEX 0006, PEX 0008 or PEX 0009.5.4 DensityWhen determined in accordance with 7.5, thePEX base resin, without carbon black, shall have a minimumaverage density of 0.926 g/cm3.3Available from Standardization Documents Order Des
32、k, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/dodssp.daps.dla.mil.4Available from International Organization for Standardization (ISO), 1, ch. dela Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http:/www.iso.org.5Available from Plastics Pipe Institute (PPI)
33、, 105 Decker Court, Suite 825,Irving, TX 75062, http:/www.plasticpipe.org.TABLE 1 PEX Pipe Material Designation CodesPEX Pipe MaterialDesignation Code73F 23CHDB Psi MPa200F 93CHDB Psi MPaPEX 0006 1250 8.62 630 4.34PEX 0008 1600 11.03 630 4.34PEX 0009 1800 12.41 630 4.34F2905/F2905M 1325.5 Carbon Bla
34、ckPE compounds used to make PEX pipeshall contain 2.0 to 3.0 percent well dispersed carbon black asmeasured in the PEX pipe by Test Method D1603 or TestMethod D4218.5.6 Rework MaterialPEX rework shall not be used in themanufacture of PEX pipes and fittings made in accordance tothis specification.6.
35、Requirements6.1 WorkmanshipThe pipe shall be homogeneousthroughout and free of visible cracks, holes, foreign inclusions,or other defects. The pipe shall be as uniform as commerciallypracticable in color, opacity, density, and other physical prop-erties.6.2 Out-of RoundnessThe maximum out-of roundne
36、ssrequirements shown in Table 2 and Table 3 for pipe apply tothe average measured diameter in accordance with 7.4.1.6.3 Dimensions and Tolerances:6.3.1 Outside DiametersThe outside diameters and toler-ances shall be as shown in Table 2 or Table 3, when measuredin accordance with 7.4 and 7.4.1.6.3.2
37、Wall ThicknessThe wall thickness and tolerancesshall be as shown in Table 4 or Table 5, when measured inaccordance with 7.4 and 7.4.2.6.4 Sustained Pressure 73F 23CThe PEX pipe shallnot fail in less than 1000 h when tested in accordance with 7.6.For PEX 0006 the stress shall be 1320 psi 9.1 MPa, for
38、 PEX0008 the stress shall be 1650 psi 11.3 MPa, and for PEX 0009the stress shall be 2050 psi 14.1 MPa. Piping intended for useat temperatures of 100F 38C and higher shall be tested atboth 73F 23C and the maximum design temperature. Thetest fiber stress shall be 90 % of the HDB.6.5 Minimum Hydrostati
39、c Burst Pressure (Quick Burst)The pipe shall fail in a ductile manner when tested inaccordance with 7.7. For pipe sizes above 4 in. 110 mmnominal diameter, the testing lab shall be allowed to replace thequick burst test by the apparent ring tensile strength test in 6.6.6.6 Apparent Tensile Strength
40、at YieldWhen tested inaccordance to 7.8, the PEX pipe shall demonstrate a minimumof 3000 psi 20.7 MPa for PEX 0006, 3700 psi 25.5 MPa forPEX 0008, and 4600 psi 31.7 MPa for PEX 0009.6.7 Degree of CrosslinkingWhen tested in accordancewith 7.9, the degree of crosslinking for PEX pipe material shallbe
41、within the range from 65 to 89% inclusive. Depending onthe process used, the following minimum percentage crosslink-ing values shall be achieved: 73% by peroxides, 65% byelectron beam, or 65% by silane compounds.6.8 Stabilizer FunctionalityStabilizer Functionality shallbe tested in accordance with 7
42、.10. The test need only beperformed for the original validation of pipe made from aparticular compound.6.9 Bent Pipe Hydrostatic Sustained Pressure Strength:6.9.1 GeneralPEX pipe sizes and DRs deemed suitablefor bending by the pipe manufacturer shall meet the require-ments in 6.10.2.6.9.2 Cold-bent
43、pipe, with a radius of six (6) times theoutside diameter and consisting of a continuous bend lengthinducing not less than 90 angle, shall meet the minimumhydrostatic sustained pressure strength requirements in 6.4when tested in accordance with 7.6.6.10 Fittings and Joints:6.10.1 Fittings intended fo
44、r use with PEX pipe at tempera-tures up to 200F 93C shall meet the dimensional, designand performance requirements for the corresponding fittingproduct standard, such as Specification F1055, ISO 14531-2, orISO 14531-3. Fittings shall be compatible with PEX pipe madeTABLE 2 Metric-sized Outside Diame
45、ters and Tolerances for PEXPipePipe Size AverageOutside DiameterTolerances forAverage DiameterOut-of-Roundnessmm mm mm mm16 16.15 0.15 1.220 20.15 0.15 1.225 25.15 0.15 1.232 32.15 0.15 1.340 40.20 0.20 1.450 50.20 0.20 1.463 63.20 0.20 1.575 75.25 0.25 1.690 90.30 0.30 1.8110 110.35 0.35 2.2125 125
46、.40 0.40 2.5140 140.45 0.45 2.8160 160.50 0.50 3.2180 180.55 0.55 3.6200 200.60 0.60 4.0225 225.70 0.70 4.5250 250.75 0.75 5.0280 280.85 0.85 9.8315 315.95 0.95 11.1355 356.10 1.10 12.5400 410.20 1.20 14.0450 451.35 1.35 15.6500 501.50 1.50 17.5560 561.70 1.70 19.6630 631.90 1.90 22.1TABLE 3 Inch-si
47、zed Outside Diameters and Tolerances for PEXPipePipeSizeOutsideDiameterTolerances or OutsideDiameter in. in. in.3 3.500 .0164 4.500 .0205 5.563 .0256 6.625 .0308 8.625 .03910 10.750 .04812 12.750 .05714 14.000 .06316 16.000 .07218 18.000 .08120 20.000 .09022 22.000 .09924 24.000 .10826 26.000 .11728
48、 28.000 .12630 30.000 .13532 32.000 .14434 34.000 .15336 36.000 .16242 42.000 .18948 48.000 .21654 54.000 .243F2905/F2905M 133to this specification. The fittings manufacturer shall recom-mend their fittings for use with PEX pipe in the intendedapplication. PEX pipe shall only be joined using qualifi
49、edjoining procedures.6.10.2 PE electrofusion fittings shall only be used fortemperatures up to 140F 60C. PEX electrofusion fittingsshall be used for temperatures above 140F 60C up to 200F93C. All electrofusion joints made between PEX pipe andelectrofusion fittings shall meet the joint performance require-ments as specified in the applicable fittings standard, such asSpecification F1055 or ISO 14531-2.NOTE 2The following pe
