1、Designation: D5685 11 An American National StandardStandard Specification for“Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin)Pressure Pipe Fittings1This standard is issued under the fixed designation D5685; the number immediately following the designation indicates the year oforiginal adopt
2、ion or, in the case of revision, the 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.1. Scope1.1 This specification covers “fiberglass” (glass-fiber-reinforced thermosett
3、ing-resin) fittings for use with filamentwound or centrifugally cast fiberglass pipe, or both, in sizes 1in. through 24 in. for pipe manufactured to SpecificationD2996 or D2997, or both.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathe
4、maticalconversions to SI units that are provided for information onlyand are not considered standard.1.3 The following safety hazard caveat pertains only to thetest method portion, Section 7, of this specification:1.4 This standard does not purport to address all of thesafety concerns, if any, assoc
5、iated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.NOTE 1The term “fiberglass pipe” as described in Section 3 of thisspecification applies to both reinf
6、orced thermosetting resin pipe (RTRP)and reinforced polymer mortar pipe (RPMP).NOTE 2For the purposes of this standard, ploymer does not includenatural polymers.NOTE 3There is no known ISO equivalent to this standard.2. Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics
7、for TestingD883 Terminology Relating to PlasticsD1598 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 Terms Relating to Plas-ticsD2143
8、 Test Method for Cyclic Pressure Strength ofReinforced, Thermosetting Plastic PipeD2310 Classification for Machine-Made “Fiberglass”(Glass-Fiber-Reinforced Thermosetting-Resin) PipeD2992 Practice for Obtaining Hydrostatic or Pressure De-sign Basis for “Fiberglass” (Glass-Fiber-ReinforcedThermosettin
9、g-Resin) Pipe and FittingsD2996 Specification for Filament-Wound “Fiberglass(Glass-Fiber-Reinforced Thermosetting-Resin) PipeD2997 Specification for Centrifugally Cast “Fiberglass”(Glass-Fiber-Reinforced Thermosetting-Resin) PipeD3567 Practice for Determining Dimensions of “Fiberglass”(Glass-Fiber-R
10、einforced Thermosetting Resin) Pipe andFittingsD4024 Specification for Machine Made “Fiberglass” (Glass-Fiber-Reinforced Thermosetting Resin) FlangesF412 Terminology Relating to Plastic Piping SystemsF477 Specification for Elastomeric Seals (Gaskets) for Join-ing Plastic Pipe2.2 ANSI Standard:B16.5
11、Steel Pipe Flanges, Flanged Valves and Fittings33. Terminology3.1 Definitions:3.1.1 GeneralDefinitions are in accordance with Termi-nology D883 or F412. Abbreviations are in accordance withTerminology D1600, unless otherwise indicated. The abbrevia-tion for fiberglass pipe is RTRP and the abbreviati
12、on forfiberglass fittings is RTRF.3.1.2 “fiberglass” pipetubular product containing glassfiber reinforcements embedded in or surrounded by curedthermosetting resin. The composite structure may containaggregate, granular or platelet fillers, thixotropic agents,pigments, or dyes. Thermoplastic or ther
13、mosetting liners orcoatings may be included.3.1.3 reinforced thermosetting resin pipefiberglass pipewithout aggregate (RTRP).1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.23 on ReinforcedPlastic Piping Systems and
14、Chemical Equipment.Current edition approved Feb. 1, 2011. Published March 2011. Originallyapproved in 1995. Last previous edition approved in 2005 as D5685 - 05. DOI:10.1520/D5685-11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.
15、org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.*A Summary of Changes section appears at the end of
16、 this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.4 reinforced polymer mortar pipefiberglass pipe withaggregate (RPMP).3.1.5 reinforced thermosetting resin fittingfiberglass fit-ting without aggregate (RTRF).3.1.6 rein
17、forced polymer mortar fittingfiberglass fittingwith aggregate (RPMF).4. Classification4.1 This specification covers fiberglass fittings defined bytype (method of manufacture), grade (general resin type), class(general liner type), catagory (configuration of joining system),and pressure rating ( a si
18、ngle letter disignating the pressureclass and method of manufacture).4.2 Types:4.2.1 Type 1Filament-wound fittings manufactured bywinding continuous fibrous-glass strand roving or roving tape,either preimpregnated or impregnated during winding, onto amandrel, or a liner corresponding to the fitting
19、shape.4.2.2 Type 2Compression molded fittings made by apply-ing external pressure and heat to a molding compound that isconfined within a closed mold.4.2.3 Type 3Resin transfer molded fittings manufacturedby pumping a thermosetting resin into glass reinforcementsthat have been cut to size and clampe
20、d between matchedmolds.4.2.4 Type 4Centrifugally cast fittings made by applyingresin and reinforcement to the inside of a mold that is rotatingand heated, subsequently polymerizing the resin system.4.2.5 Type 5Contact molded fittings made by applyingresin and reinforcement to a mold or to mitered fi
21、lamentwoundstock or centrifugally cast pipe stock. This procedure shall alsocover “spray-up” fittings which are made by spraying resin andreinforcement on a mold or over mitered pipe wound stock.“Contact molding” includes both hand lay-up and spray-upmanufacturing processes.4.2.6 Fittings of Type 1
22、through Type 5 which require thrustblocking or external axial restraint when installed shall havethe letter “R” appended to the type of designation. ( Forinstance, a contact molded fitting requiring thrust blockingwhen installed would be designated a type “5R”.)4.3 Grades:4.3.1 Grade 1Epoxy-resin.4.
23、3.2 Grade 2Polyester-resin.4.3.3 Grade 3Phenolic-resin.4.3.4 Grade 4Vinylester resin.4.3.5 Grade 7Furan resin.4.4 Classes:4.4.1 Class ANo liner.4.4.2 Class BPolyester-resin liner (nonreinforced).4.4.3 Class CEpoxy-resin liner (nonreinforced).4.4.4 Class DPhenolic resin liner (nonreinforced).4.4.5 Cl
24、ass EPolyester-resin liner (reinforced).4.4.6 Class FEpoxy-resin liner (reinforced).4.4.7 Class GPhenolic resin liner (reinforced).4.4.8 Class HThermoplastic-resin liner (specify).4.4.9 Class IFuran-resin liner (reinforced).4.4.10 Class JVinylester resin liner (nonreinforced).4.4.11 Class KVinyleste
25、r resin liner (reinforced).4.5 Joint Categories (Method of Joining):4.5.1 Category 1Taper-to-taper adhesive-bonded joint fit-tings manufactured with a tapered socket to be used inconjunction with a pipe or fitting with a matching spigotsection and a suitable adhesive. This joining method providesan
26、interference fit over the entire length of the bond line.4.5.2 Category 2Straight-taper adhesive-bonded joint fit-ting manufactured with a tapered socket to be used with a pipeor fitting with an untapered spigot section and a suitableadhesive. This joining method provides an interference fit atthe b
27、ottom of the socket.4.5.3 Category 3Straight adhesive bonded joint fittingmanufactured with an untapered socket for use with a pipe orfitting with an untapered spigot and a suitable adhesive. Thisjoining provides no interference fit.4.5.4 Category 4Butt and strap joint made by a contactmolding proce
28、ss which involves hand lay-up with glass-wovenroving or chopped strand mat, or both, which is saturated withresin.4.5.5 Category 5Flanged fittings are available as alloutlets flanged or as flange-by-joint specified in this specifica-tion. Flanges are in compliance with Specification D4024.4.5.6 Cate
29、gory 6Elastomeric (gasket) sealed joints withsealant manufactured in compliance with Specification F477for joints which have integral longitudinal restraint and do notrequire thrust blocking or external longitudinal restraint.4.5.7 Category 7Elastomeric (gasket) sealed joints withseals manufactured
30、in compliance with Specification F477 forjoints which require thrust blocking or external longitudinalrestraint.4.6 Pressure RatingPressure rating shall be categorizedby a single letter designation. Pressure designations are shownin Table 1. The pressure ratings are applicable for the tempera-ture a
31、t which the fittings were tested and for lower tempera-tures down to 50F (46C). When agreed upon betweenpurchaser and manufacturer, pressure ratings determined bytests conducted following Practice D2992 are acceptable.4.7 Designation CodeThe fitting designation code shallconsist of the abbreviation
32、RTRF or RPMF followed by thetype, grade, and class in Arabic numerals and the pressurerating category as a capital letter.NOTE 4An example is RTRF 21A2E. This designation describes aTABLE 1 Pressure CategoriesDesignation Pressure RatingA, psig (kPa)A 25 (172)B 50 (345)C 100 (690)D 150 (1034)E 200 (1
33、380)F 250 (1724)G 300 (2068)H 400 (2759)I 500 (3448)J 1000 (6896)APressure ratings are applicable only for the temperature at which the fittings weretested and for lower temperatures.D5685 112(Type 2) compression molded fitting with a (Grade 1) epoxy-resin withouta liner (Class A), which is joined w
34、ith a (Category 2) taper-to-taperadhesive joining system and has a 200 psig (1380 kPa) pressure rating.NOTE 5Fittings with identical classification from different manufac-turers may not be interchangeable due to non-standardization of pipe orsocket diameter, socket length, taper angle, or combinatio
35、n thereof.5. Materials5.1 Fittings manufactured in accordance with this specifica-tion shall be composed of reinforcement embedded in orsurrounded by cured thermosetting-resin. The composite struc-ture may contain granular or platelet fillers, thixotropic agents,pigments, or dyes.5.2 The resins, fib
36、erglass reinforcements, and othermaterials, when combined into a composite structure, shallproduce a fitting that will meet the performance requirementsof this specification.6. Requirements6.1 WorkmanshipThe fittings shall be free of all defectsincluding indentations, delaminations, bubbles, pin hol
37、es, for-eign inclusions, and resin starved areas, which, due to theirnature, degree, or extent, detrimentally affect the strength andserviceability of the fitting. The fitting shall be as uniform ascommercially practicable in color, opacity, and other physicalproperties.6.2 Dimensions and Tolerances
38、All flanged fittings shallconform to the center line to flange face dimensions, hole sizeand hole pattern, and tolerances of ANSI B16.5 short or longradius type, or otherwise as agreed upon between the manu-facturer and purchaser. Fitting center line to end dimensions,taper angles, taper length, or
39、combinations thereof, will varyfor non-flanged joining systems and the individual manufac-turers shall be consulted for dimensions. Dimensions shall bemeasured in accordance with 7.3.NOTE 6Fittings with short radii which are not in compliance withANSI B16.5 radius tolerances may be available.6.3 Fit
40、tings and Connections Pressure Test RequirementsFittings, couplings, and connections shall meet the followingqualification requirements when tested with restrained ends forType 6 fittings, and unrestrained ends for other type fittings, inaccordance with 7.4.1 for short term hydrostatic strength test
41、s,and 7.4.2 for cyclic or static tests.6.3.1 Each type of component and its field-jointed configu-ration shall be capable of sustaining a short-time hydrostaticpressure, of at least four times its cyclic-rated pressure or threetimes its static-rated pressure for 1 min without visible weepingor leaka
42、ge.6.3.2 Each component shall meet or exceed the cyclic orstatic-test requirements of 7.4.2.6.4 Glass Transition Temperature (Tg)The Tg for eachresin used, as determined by some thermal analysis method,shall be no less than a minimum statistically significant valueestablished by the manufacturer. Sa
43、mples shall be taken frommanufactured fittings when thermal analysis testing is accom-plished by differential-scanning-chlorimeter (DSC). Test inaccordance with 7.5.6.5 Factory leak tests shall be conducted at a pressure of 1.5times pressure rating and at a frequency determined by anagreement betwee
44、n the purchaser and the seller.6.6 For individual orders, only those additional test andnumber of tests specifically agreed upon between the purchaserand the seller need be conducted.7. Test Methods7.1 ConditioningWhen conditioning is required, and in allcases of disagreement, condition the test spe
45、cimens in accor-dance with Procedure A of Practice D618.7.2 Test ConditionsThe tests may be conducted at ambienttemperature and humidity conditions. When controlled envi-ronment testing is specified, tests shall be conducted in theStandard Laboratory Atmosphere of 73.4 6 3.6F (23 6 2C)and 50 6 10 %
46、relative humidity. When elevated temperaturetesting is specified, conduct the tests at the design temperature6 5.4F (3C).7.3 Dimensions and TolerancesMeasure fitting dimen-sions in accordance with applicable documents and PracticeD3567. Measure flange dimensions with a micrometer orvernier calipers,
47、 or other suitable measuring devices accurateto within 60.001 in. (0.02 mm). Diameters shall be determinedby averaging a minimum of four measurements, equally spacedcircumferentially.7.4 Pressure Tests:7.4.1 Short-Term Hydrostatic Strength TestShort-term hy-drostatic failure pressure tests to determ
48、ine compliance with6.3 performed at ambient temperature in accordance with TestMethod D1599 using specimens and sizes as described in7.4.3. Leaking past the gasket interface of flanged fittings andelastomeric sealed fittings is permissible during this test,provided the pressure is at least two times
49、 the rating when theleak occurs. The bolt torquing sequence of SpecificationD4024, Fig. 2 shall be used when testing flanged fittings.Fittings without flanges shall be tested with the pipe they are tobe used with joined to the fitting. Bending or shape restraintduring the test is permitted to the extent applicable to itsanticipated installed conditions. This information shall becontained in the test report.7.4.2 Cyclic or Static Pressure Test:7.4.2.1 For cyclic pressure tests, the gage pressure at thepeak pressure of the cyc
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