1、Designation: D2737 121 D2737 12a An American National StandardStandard Specification forPolyethylene (PE) Plastic Tubing1This standard is issued under the fixed designation D2737; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、 year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1 NOTETable X1.1 was editorially correct
3、ed in February 2012.1. Scope*1.1 This specification covers polyethylene (PE) plastic tubing in outside diameters and SDRs that are pressure rated for water.Included are requirements for PE compounds, and requirements and test methods for PE plastic tubing workmanship, dimensions,elevated temperature
4、 sustained pressure, burst pressure and marking.1.2 The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notesand footnotes shall not be considered as requirements of the specification. Notes and footnotes in tables and figures, andSupp
5、lementary Requirements are requirements of the specification.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.NOTE 1Joining PE plast
6、ic tubing with fittings that require flaring the tubing is not recommended because Practice D3140, the technique used to makethe flare has been withdrawn (discontinued).NOTE 2References and PE compound descriptions for PE2305, PE2406, PE3306, PE3406, and PE3408 have been removed due to changes inSpe
7、cification D3350 and PPI TR-3. For removed designations, refer to previous editions of Specification D2737, Specification D3350, PPI TR-3 and PPITR-4. The removal of these PE compounds does not affect pipelines that are in service. PE compounds and material designations resulting from changesin Spec
8、ification D3350 and PPI TR-3 are addressed in Section 5.1.4 The following safety hazards caveat pertains only to the test methods portion, Section 7, of this specification:This standarddoes not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility o
9、f the user of thisstandard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD123
10、8 Test Method for Melt Flow Rates of Thermoplastics by Extrusion PlastometerD1598 Test Method for Time-to-Failure of Plastic Pipe Under Constant Internal PressureD1599 Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and FittingsD1600 Terminology for Abbreviated T
11、erms Relating to PlasticsD1603 Test Method for Carbon Black Content in Olefin PlasticsD2122 Test Method for Determining Dimensions of Thermoplastic Pipe and FittingsD2565 Practice for Xenon-Arc Exposure of Plastics Intended for Outdoor ApplicationsD2837 Test Method for Obtaining Hydrostatic Design B
12、asis for Thermoplastic Pipe Materials or Pressure Design Basis forThermoplastic Pipe ProductsD3350 Specification for Polyethylene Plastics Pipe and Fittings MaterialsD3140 Practice For Flaring Polyolefin Pipe And Tubing31 This specification is under the jurisdiction of ASTM Committee F17 on Plastic
13、Piping Systems and is the direct responsibility of Subcommittee F17.26 on Olefin BasedPipe.Current edition approved Jan. 15, 2012Nov. 1, 2012. Published January 2012December 2012. Originally approved in 1968. Last previous edition approved in 20032012as D2737 03. DOI: 10.1520/D2737-12.10.1520/D2737-
14、12A.2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Withdrawn. The last approved version of this histori
15、cal standard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, A
16、STM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, P
17、O Box C700, West Conshohocken, PA 19428-2959. United States1D4218 Test Method for Determination of Carbon Black Content in Polyethylene Compounds By the Muffle-Furnace TechniqueF412 Terminology Relating to Plastic Piping SystemsG154 Practice for Operating Fluorescent Light Apparatus for UV Exposure
18、of Nonmetallic MaterialsG155 Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials2.2 APWA Standard:4APWA Uniform Color Code2.3 NSF Standards:5NSF/ANSI Standard No. 14 for Plastic Piping Components and Related MaterialsNSF/ANSI Standard No. 61 for Drinking Water Sys
19、tems ComponentsHealth Effects2.4 PPI Standards:6PPI TR-3 Policies and Procedures for Developing Hydrostatic Design Basis (HDB), Pressure Design Basis (PDB), StrengthDesign Basis (SDB), and Minimum Required Strength (MRS) Ratings for Thermoplastic Piping Materials or PipePPI TR-4 HDB/SDB/PDB/MRS List
20、ed Materials, PPI Listing of Hydrostatic Design Basis (HDB), Strength Design Basis(SDB), Pressure Design Basis (PDB), and Minimum Required Strength (MRS) Ratings for Thermoplastic Piping Materialsor Pipe3. Terminology3.1 DefinitionsUnless otherwise specified, definitions are in accordance with Termi
21、nology F412 and abbreviations are inaccordance with Terminology D1600.4. Tubing Classification4.1 GeneralThis specification covers PE plastic tubing made from PE compounds in three standard dimension ratios andpressure rated for water. Pressure ratings for water are dependent on the PE compound in a
22、ccordance with the followingrelationship:PR5 23HDSSDR11! (1)Where:PR = pressure rating for water, 73F (23C), psi (kPa)HDS = hydrostatic design stress for water at 73F (23C), psi (kPa)SDR = standard dimension ratioNOTE 3PR and HDS must have the same units. See Appendix X1 for maximum pressure ratings
23、 for water.4.2 This specification covers PE tubing in standard dimension ratios SDR 7.3, SDR 9, and SDR 11.5. Materials5.1 Polyethylene CompoundPolyethylene compounds suitable for use in the manufacture of tubing under this specificationshall meet thermoplastic materials designation codes PE2708 or
24、PE3608 or PE4608 or PE4710, and shall meet Table 1requirements for PE2708 or PE3608 or PE4608 or PE4710, and shall meet thermal stability, brittleness temperature and elongationat break requirements in accordance with Specification D3350.5.1.1 Color and Ultraviolet (UV) StabilizationPolyethylene com
25、pounds shall meet Specification D3350 code C, D or E. Inaddition, Code C polyethylene compounds shall have 2 to 3 percent carbon black, and Code D or E polyethylene compounds shallhave sufficient UV stabilizer to protect tubing from deleterious UV exposure effects during unprotected outdoor shipping
26、 andstorage for at least eighteen (18) months.NOTE 4Pipe users should consult with the pipe manufacturer about the outdoor exposure life of the product under consideration. Evaluation of UVstabilizer in Code D or E PE compound using Practice D2565 or Practice G154 or Practice G155 may be useful for
27、this purpose.5.1.2 Colors for solid color, an external color layer or color stripesIn accordance with the APWA Uniform Color Code, blueshall identify potable water service; green shall identify sewer service; and purple (lavender) shall identify reclaimed water service.Yellow identifies gas service
28、and shall not be used.5.2 Products intended for contact with potable water shall be evaluated, tested and certified for conformance with NSF/ANSIStandard No. 61 or the health effects portion of NSF/ANSI Standard No. 14 by a certifying organization acceptable to the authorityhaving jurisdiction.4 APW
29、A, 2345 Grand Boulevard, suite 500, Kansas, City, MO 64108-2641.5 Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., Ann Arbor, MI 48113-0140, http:/www.nsf.org.6 Available from Plastics Pipe Institute (PPI), 105 Decker Court, Suite 825, Irving, TX 75062, http:/www.plasticpipe.or
30、g.D2737 12a25.3 Rework MaterialClean polyethylene compound from the manufacturers own tubing production that met 5.1 through 5.2as new PE compound is suitable for re-extrusion into tubing when blended with new PE compound having the same materialdesignation. Tubing containing rework material shall m
31、eet all the requirements of this specification.6. Requirements6.1 WorkmanshipThe tubing shall be homogeneous throughout and free from visible cracks, holes, foreign inclusions, or otherdefects. The tubing shall be as uniform as commercially practicable in color, opacity, density, and other physical
32、properties. See5.1.2.6.2 Dimensions and Tolerances:6.2.1 Outside DiametersThe outside diameters and tolerances shall be as shown in Table 2 when measured in accordance with7.4.6.2.1.1 Out-of-roundnessOut of roundness shall be in accordance with Table 2 as extruded, but before coiling for packagingwh
33、en measured in accordance with 7.4.TABLE 1 Polyethylene Compound RequirementsRequirementMaterial DesignationPE2708 PE3608 PE4608 PE4710Required ValueHDB at 140F (60C), psi(MPa),per Test Method D2837and PPI TR-3AB B B BMinimum HDB at 140F(60C), psi (MPa),per Test Method D2837and PPI TR-3800 (5.5)A 80
34、0 (5.5)A 800 (5.5)A 800 (5.5)AHDS for water at73F (23C) psi (MPa),per Test Method D2837and PPI TR-3C800 (5.5) 800 (5.5) 800 (5.5) 1000 (6.9)HDS for water at73F (23C) psi (MPa),per Test Method D2837and PPI TR-3A800 (5.5) 800 (5.5) 800 (5.5) 1000 (6.9)Melt flow rateper Test Method D1238#0.40 g/10 min
35、Cond.190/2.16 or #20 g/10min Cond. 190/21.6#0.15 g/10 minCond. 190/2.16 or#20 g/10 minCond. 190/21.6#0.15 g/10 minCond. 190/2.16 or#20 g/10 minCond. 190/21.6#0.15 g/10 minCond. 190/2.16 or#20 g/10 minCond. 190/21.6Specification D3350Cell ClassificationProperty RequirementRequired ValueDensity (natur
36、al base resin) 2 3 4 4SCG Resistance 7 6 6 7Color and UV Stabilizer CodeD C, D or E C, D or E C, D or E C, D or EColor and UV Stabilizer CodeB C, D or E C, D or E C, D or E C, D or EA HDB at 140F (60C) not required. Contact manufacturer about pipe use at temperatures other than 73F (23C).B HDB at 14
37、0F (60C) required. Contact manufacturer or see PPI TR-4 for listed value.A Contact manufacturer or see PPI TR-4 for listed value.B See 5.1.1.TABLE 2 Outside Diameters and Tolerances for PE Plastic TubingTubingSizeOutsideDiameter,in. (mm)Outside DiameterTolerance, in. (mm)Out-of-Roundness,in. (mm)12
38、0.625 (15.87 0.004 (0.10) 0.030 (0.76)58 0.750 (19.05) 0.004 (0.10) 0.030 (0.76)34 0.875 (22.23) 0.004 (0.10) 0.030 (0.76)1 1.125 (28.58) 0.005 (0.13) 0.030 (0.76)114 1.375 (34.93) 0.005 (0.13) 0.030 (0.76)112 1.625 (41.23) 0.006 (0.15) 0.030 (0.76)2 2.125 (53.98) 0.006 (0.15) 0.030 (0.76)D2737 12a3
39、NOTE 5Coiling may increase out-of-roundness, depending on the coiling method and coil dimensions.6.2.2 Wall ThicknessesThe wall thicknesses and tolerance shall be as shown in Table 3 when measured in accordance with7.4. Wall thickness shall be inclusive of all extruded concentric layers.6.2.3 Wall T
40、hickness VariationThe wall thickness variation shall not exceed 12 % when measured in accordance with 7.4.6.2.4 Thickness of Outer LayerFor tubing produced by simultaneous multiple extrusion, the outer concentric layer shall beat least 0.020 in (0.5 mm) thick.6.3 BondFor tubing produced by simultane
41、ous multiple extrusion, the bond between the layers shall be strong and uniform.It shall not be possible to cleanly separate any two layers with a probe or point of a knife blade at any point.6.4 Carbon BlackPolyethylene tubing produced using Code C polyethylene compound per 5.1.1 shall contain 2 to
42、 3% carbonblack when tested in accordance with 7.5.6.5 Burst PressureThe minimum burst pressure for tubing shall be as given in Table 4, when determined in accordance with7.6 using a minimum hoop stress of 2520 psi (17.4 MPa) for Table 1 density cell 2 polyethylene compound or 2900 psi (20.0 MPa)for
43、 Table 1 density cell 3 or 4 polyethylene compound. In addition, the failure shall be ductile.6.6 Elevated Temperature Sustained PressureElevated temperature sustained pressure tests for each polyethylene compounddesignation per Table 1 used in production at the facility shall be conducted twice ann
44、ually per 7.7.6.7 Inside Surface Ductility for TubingTubing shall be tested for inside surface ductility in accordance with 7.8 or 7.9.NOTE 6Tensile elongation testing per 7.9 provides a quantifiable result and is used for referee testing and in cases of disagreement.7. Test Methods7.1 ConditioningC
45、ondition as specified in the test method. Where conditioning is not specified in the test method, conditionthe test specimens at 73 6 3.6F (23 6 2C) without regard to relative humidity for not less than 4 h prior to the test in accordancewith Procedure A of Practice D618, or at 73 6 3.6F (23 6 2C) f
46、or not less than 1 h in accordance with Procedure D of PracticeD618.7.2 Test ConditionsConduct tests in accordance with the conditions specified in the test method, or if not specified in the testmethod, at 73.4 6 3.6F (23 6 2C) without regard to relative humidity.7.3 SamplingThe number and selectio
47、n of samples shall be as specified in the test method, or if not specified in the testmethod, sample selection shall be as agreed upon by the purchaser and seller. In case of no prior agreement, any sample selectedby the testing laboratory shall be deemed adequate.7.3.1 Test SpecimensNot less than 5
48、0 % of the test specimens required for any pressure test shall have at least a part of themarking in their central sections. The central section is that portion of the tubing sample that is at least one pipe diameter awayfrom an end closure. The entire marking shall be documented in testing records.
49、7.4 Dimensions and TolerancesUse any length of tubing to determine the dimensions. Outside diameter, out-of-roundness,and wall thickness shall be measured in accordance with Test Method D2122.7.4.1 Outside DiameterMeasure the outside diameter of the tubing in accordance with Test Method D2122. The averageoutside diameter is the arithmetic average of the maximum and minimum diameter at any cross section. The tolerance forout-of-roundness shall apply only to tubing prior to shipment.7.5 Carbon BlackF
