1、Designation:D568505 Designation: D5685 11An 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 ye
2、ar oforiginal adoption 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. Scope *1.1 This specification covers “fiberglass” (glass-fiber-
3、reinforced thermosetting-resin) fittings for use with filament wound orcentrifugally cast fiberglass pipe, or both, in sizes 1 in. through 24 in. for pipe manufactured to Specification D2996 or D2997,or both.1.2The following safety hazard caveat pertains only to the test method portion, Section1.2 T
4、he 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.1.3 The following safety hazard caveat pertains only to the test method portion, Section
5、 7, of this specification:1.31.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations p
6、rior to use.NOTE 1The term “fiberglass pipe” as described in Section 3 of this specification applies to both reinforced thermosetting resin pipe (RTRP) andreinforced polymer mortar pipe (RPMP).NOTE 2For the purposes of this standard, ploymer does not include natural polymers.NOTE3There is no similar
7、 or equivalent ISO standard. 3There is no known ISO equivalent to this standard.2. Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD883 Terminology Relating to PlasticsD1598 Test Method for Time-to-Failure of Plastic Pipe Under Constant Internal PressureD15
8、99 Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and FittingsD1600 Terminology for Abbreviated Terms Relating to PlasticsD2143 Test Method for Cyclic Pressure Strength of Reinforced, Thermosetting Plastic Pipe D2310D2310 Classification for Machine-Made Fibergla
9、ss (Glass-Fiber-Reinforced Thermosetting-Resin) PipeD2992 Practice for Obtaining Hydrostatic or Pressure Design Basis for Fiberglass (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe and FittingsD2996 Specification for Filament-Wound Fiberglass (Glass-Fiber-Reinforced Thermosetting-Resin) PipeD2997
10、Specification for Centrifugally Cast Fiberglass (Glass-Fiber-Reinforced Thermosetting-Resin) PipeD3567 Practice for Determining Dimensions of Fiberglass (Glass-Fiber-Reinforced Thermosetting Resin) Pipe and FittingsD4024 Specification for Machine Made Fiberglass (Glass-Fiber-Reinforced Thermosetting
11、 Resin) FlangesF412 Terminology Relating to Plastic Piping SystemsF477 Specification for Elastomeric Seals (Gaskets) for Joining Plastic Pipe2.2 ANSI Standard:B16.5 Steel Pipe Flanges, Flanged Valves and Fittings31This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is
12、the direct responsibility of Subcommittee D20.23 on Reinforced Plastic PipingSystems and Chemical Equipment.Current edition approved Nov.Feb. 1, 2005.2011. Published November 2005.March 2011. Originally approved in 1995. Last previous edition approved in 20022005 asD568502.D5685 - 05. DOI: 10.1520/D
13、5685-05.10.1520/D5685-11.2For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3Available from American National Sta
14、ndards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org1This 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 possibl
15、e to adequately depict all changes accurately, ASTM 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 standard.Copyr
16、ight ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3. Terminology3.1 Definitions:3.1.1 GeneralDefinitions are in accordance with Terminology D883 or F412. Abbreviations are in accordance withTerminology D1600, unless otherwise indicated. The
17、abbreviation for fiberglass pipe is RTRP and the abbreviation for fiberglassfittings is RTRF.3.1.2 “fiberglass” pipetubular product containing glass fiber reinforcements embedded in or surrounded by curedthermosetting resin. The composite structure may contain aggregate, granular or platelet fillers
18、, thixotropic agents, pigments, ordyes. Thermoplastic or thermosetting liners or coatings may be included.3.1.3 reinforced thermosetting resin pipefiberglass pipe without aggregate (RTRP).3.1.4 reinforced polymer mortar pipefiberglass pipe with aggregate (RPMP).3.1.5 reinforced thermosetting resin f
19、ittingfiberglass fitting without aggregate (RTRF).3.1.6 reinforced polymer mortar fittingfiberglass fitting with aggregate (RPMF).4. Classification4.1 This specification covers fiberglass fittings defined by type (method of manufacture), grade (general resin type), class(general liner type), catagor
20、y (configuration of joining system), and pressure rating ( a single letter disignating the pressure classand method of manufacture).4.2 Types:4.2.1 Type 1Filament-wound fittings manufactured by winding continuous fibrous-glass strand roving or roving tape, eitherpreimpregnated or impregnated during
21、winding, onto a mandrel, or a liner corresponding to the fitting shape.4.2.2 Type 2Compression molded fittings made by applying external pressure and heat to a molding compound that isconfined within a closed mold.4.2.3 Type 3Resin transfer molded fittings manufactured by pumping a thermosetting res
22、in into glass reinforcements that havebeen cut to size and clamped between matched molds.4.2.4 Type 4Centrifugally cast fittings made by applying resin and reinforcement to the inside of a mold that is rotating andheated, subsequently polymerizing the resin system.4.2.5 Type 5Contact molded fittings
23、 made by applying resin and reinforcement to a mold or to mitered filamentwound stockor centrifugally cast pipe stock. This procedure shall also cover “spray-up” fittings which are made by spraying resin andreinforcement on a mold or over mitered pipe wound stock. “Contact molding” includes both han
24、d lay-up and spray-upmanufacturing processes.4.2.6 Fittings of Type 1 through Type 5 which require thrust blocking or external axial restraint when installed shall have theletter “R” appended to the type of designation. ( For instance, a contact molded fitting requiring thrust blocking when installe
25、dwould be designated a type “5R”.)4.3 Grades:4.3.1 Grade 1Epoxy-resin.4.3.2 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 (n
26、onreinforced).4.4.4 Class DPhenolic resin liner (nonreinforced).4.4.5 Class 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.
27、10 Class JVinylester resin liner (nonreinforced).4.4.11 Class KVinylester resin liner (reinforced).4.5 Joint Categories (Method of Joining):4.5.1 Category 1Taper-to-taper adhesive-bonded joint fittings manufactured with a tapered socket to be used in conjunctionwith a pipe or fitting with a matching
28、 spigot section and a suitable adhesive. This joining method provides an interference fit overthe entire length of the bond line.4.5.2 Category 2Straight-taper adhesive-bonded joint fitting manufactured with a tapered socket to be used with a pipe orfitting with an untapered spigot section and a sui
29、table adhesive. This joining method provides an interference fit at the bottom ofthe socket.D5685 1124.5.3 Category 3Straight adhesive bonded joint fitting manufactured with an untapered socket for use with a pipe or fittingwith an untapered spigot and a suitable adhesive. This joining provides no i
30、nterference fit.4.5.4 Category 4Butt and strap joint made by a contact molding process which involves hand lay-up with glass-woven rovingor chopped strand mat, or both, which is saturated with resin.4.5.5 Category 5Flanged fittings are available as all outlets flanged or as flange-by-joint specified
31、 in this specification.Flanges are in compliance with Specification D4024.4.5.6 Category 6Elastomeric (gasket) sealed joints with sealant manufactured in compliance with Specification F477 forjoints which have integral longitudinal restraint and do not require thrust blocking or external longitudina
32、l restraint.4.5.7 Category 7Elastomeric (gasket) sealed joints with seals manufactured in compliance with Specification F477 for jointswhich require thrust blocking or external longitudinal restraint.4.6 Pressure RatingPressure rating shall be categorized by a single letter designation. Pressure des
33、ignations are shown inTable 1. The pressure ratings are applicable for the temperature at which the fittings were tested and for lower temperatures downto 50F (46C). When agreed upon between purchaser and manufacturer, pressure ratings determined by tests conductedfollowing Practice D2992 are accept
34、able.4.7 Designation CodeThe fitting designation code shall consist of the abbreviation RTRF or RPMF followed by the type,grade, and class in Arabic numerals and the pressure rating category as a capital letter.NOTE 4An example is RTRF 21A2E. This designation describes a (Type 2) compression molded
35、fitting with a (Grade 1) epoxy-resin without a liner(Class A), which is joined with a (Category 2) taper-to-taper adhesive joining system and has a 200 psig (1380 kPa) pressure rating.NOTE 5Fittings with identical classification from different manufacturers may not be interchangeable due to non-stan
36、dardization of pipe or socketdiameter, socket length, taper angle, or combination thereof.5. Materials5.1 Fittings manufactured in accordance with this specification shall be composed of reinforcement embedded in or surroundedby cured thermosetting-resin. The composite structure may contain granular
37、 or platelet fillers, thixotropic agents, pigments, ordyes.5.2 The resins, fiberglass reinforcements, and other materials, when combined into a composite structure, shall produce a fittingthat will meet the performance requirements of this specification.6. Requirements6.1 WorkmanshipThe fittings sha
38、ll be free of all defects including indentations, delaminations, bubbles, pin holes, foreigninclusions, and resin starved areas, which, due to their nature, degree, or extent, detrimentally affect the strength and serviceabilityof the fitting. The fitting shall be as uniform as commercially practica
39、ble in color, opacity, and other physical properties.6.2 Dimensions and TolerancesAll flanged fittings shall conform to the center line to flange face dimensions, hole size andhole pattern, and tolerances of ANSI B16.5 short or long radius type, or otherwise as agreed upon between the manufacturer a
40、ndpurchaser. Fitting center line to end dimensions, taper angles, taper length, or combinations thereof, will vary for non-flangedjoining systems and the individual manufacturers shall be consulted for dimensions. Dimensions shall be measured in accordancewith 7.3.NOTE 6Fittings with short radii whi
41、ch are not in compliance with ANSI B16.5 radius tolerances may be available.6.3 Fittings and Connections Pressure Test RequirementsFittings, couplings, and connections shall meet the followingqualification requirements when tested with restrained ends for Type 6 fittings, and unrestrained ends for o
42、ther type fittings, inaccordance with 7.4.1 for short term hydrostatic strength tests, and 7.4.2 for cyclic or static tests.6.3.1 Each type of component and its field-jointed configuration shall be capable of sustaining a short-time hydrostatic pressure,of at least four times its cyclic-rated pressu
43、re or three times its static-rated pressure for 1 min without visible weeping or leakage.6.3.2 Each component shall meet or exceed the cyclic or static-test requirements of 7.4.2.TABLE 1 Pressure CategoriesDesignation Pressure RatingA, psig (kPa)A 25 (172)B 50 (345)C 100 (690)D 150 (1034)E 200 (1380
44、)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 fittingswere tested and for lower temperatures.D5685 1136.4 Glass Transition Temperature (Tg)The Tg for each resin used, as determined by some thermal analysis method,
45、 shall beno less than a minimum statistically significant value established by the manufacturer. Samples shall be taken from manufacturedfittings when thermal analysis testing is accomplished by differential-scanning-chlorimeter (DSC). Test in accordance with 7.5.6.5 Factory leak tests shall be cond
46、ucted at a pressure of 1.5 times pressure rating and at a frequency determined by anagreement between the purchaser and the seller.6.6 For individual orders, only those additional test and number of tests specifically agreed upon between the purchaser and theseller need be conducted.7. Test Methods7
47、.1 ConditioningWhen conditioning is required, and in all cases of disagreement, condition the test specimens at 73.4 63.6F (23 6 2C) and 50 6 5% relative humidity for not less than 40 h prior to test, in accordance with Procedure A of PracticeWhen conditioning is required, and in all cases of disagr
48、eement, condition the test specimens in accordance with Procedure Aof Practice D618.7.2 Test ConditionsThe tests may be conducted at ambient temperature and humidity conditions. When controlledenvironment testing is specified, tests shall be conducted in the Standard Laboratory Atmosphere of 73.4 6
49、3.6F (23 6 2C) and50 6 5%10 % relative humidity. When elevated temperature testing is specified, conduct the tests at the design temperature 65.4F (3C).7.3 Dimensions and TolerancesMeasure fitting dimensions in accordance with applicable documents and Practice D3567.Measure flange dimensions with a micrometer or vernier calipers, or other suitable measuring devices accurate to within 60.001in. (0.02 mm). Diameters shall be determined by averaging a minimum of four measurements, equally spaced circumferentially.7.4 P
