1、Designation: F3226/F3226M 161Standard Specification forMetallic Press-Connect Fittings for Piping and TubingSystems1This standard is issued under the fixed designation F3226/F3226M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, t
2、he 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.1NOTEEditorial corrections were made throughout in April 2017.1. Scope1.1 This specification establishes the performanc
3、e charac-teristics required for Metallic Press-Connect Fittings for use inpiping and tubing systems with a maximum allowable workingpressure of three-hundred pounds per square inch (300 psi).These fittings directly attach to pipe or tube by mechanicaldeformation of the pipe or tube or fitting, or a
4、combinationthereof, creating a seal and a restrained joint. The seal may becreated via the mechanical deformation (of the pipe, tube orfitting) or created independently. Successful completion of thetests described herein constitutes completion of the technicalportion of the qualification process.1.2
5、 The tests specified are applicable only to ascertain theperformance characteristics. These tests are not intended foruse in the evaluation of non-Press-Connect Fittings.1.3 Refer to IACS UR P2.7.4, Table-7 for Metallic Press-Connect Fittings applications.1.4 The values stated in either SI units or
6、inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.5 This standard does not purp
7、ort to address all of thesafety concerns, if any, associated 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.1.6 This international standard was developed
8、in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents
9、2.1 ASTM Standards:2A53/A53M Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and SeamlessA135/A135M Specification for Electric-Resistance-WeldedSteel PipeA262 Practices for Detecting Susceptibility to IntergranularAttack in Austenitic Stainless SteelsA269 Specification for S
10、eamless and Welded AusteniticStainless Steel Tubing for General ServiceA276 Specification for Stainless Steel Bars and ShapesA312/A312M Specification for Seamless, Welded, andHeavily Cold Worked Austenitic Stainless Steel PipesA795/A795M Specification for Black and Hot-Dipped Zinc-Coated (Galvanized
11、) Welded and Seamless Steel Pipe forFire Protection UseB16/B16M Specification for Free-Cutting Brass Rod, Barand Shapes for Use in Screw MachinesB62 Specification for Composition Bronze or Ounce MetalCastingsB75 Specification for Seamless Copper TubeB88 Specification for Seamless Copper Water TubeB1
12、24/B124M Specification for Copper and Copper AlloyForging Rod, Bar, and ShapesB140/B140M Specification for Copper-Zinc-Lead (RedBrass or Hardware Bronze) Rod, Bar, and ShapesB283 Specification for Copper and Copper-Alloy Die Forg-ings (Hot-Pressed)B371/B371M Specification for Copper-Zinc-Silicon All
13、oyRodB466/B466M Specification for Seamless Copper-NickelPipe and TubeB467 Specification for Welded Copper-Nickel PipeB584 Specification for Copper Alloy Sand Castings forGeneral ApplicationsB858 Test Method forAmmonia Vapor Test for Determining1This specification is under the jurisdiction of ASTM Co
14、mmittee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved Dec. 15, 2016. Published March 2017. DOI: 10.1520/F3226_F3226M-16.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact
15、ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard
16、was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1Susceptibi
17、lity to Stress Corrosion Cracking in CopperAlloysB967/B967M Specification for Copper-Zinc-Tin-BismuthAlloy Rod, Bar and WireD2000 Classification System for Rubber Products in Auto-motive Applications2.2 ASME Standards:3B1.20.1 Pipe Threads, General Purpose (Inch)B16.51 Copper and Copper Alloy Press-
18、Connect PressureFittingsB36.10 Welded and Seamless Wrought Steel PipeB46.1 Surface Texture (Surface Roughness, Waviness andLay)2.3 IACS Document:4UR P2.11 Type Approval of Mechanical JointsUR P2.7.4 Mechanical Joints2.4 ISO Standards:519921 Ships and marine technology Fire resistance ofmetallic pipe
19、 components with resilient and elastomericseals Test methods19922 Ships and marine technology Fire resistance ofmetallic pipe components with resilient and elastomericseals Requirements imposed on the test bench2.5 AWS Standards:6ANSI/AWS A5.8M/A5.8 Specification for Filler Metals forBrazing and Bra
20、ze WeldingAWS B2.2/B2.2M Standard for Brazing Procedure and Per-formance Qualifications3. Terminology3.1 Definitions:3.1.1 class, na group of fitting of a particular design withthe dimensions proportional to pipe or tube outside diameters,made from the same material grade (or combination of grades),
21、for the same rated pressure, or for a rated pressure inverselyproportional to the diameter.3.1.2 FTG, nindicates a pipe-end or tube-end of aPress-Connect fitting (that is, FTG NPT). A fitting endsconfiguration that is dimensionally the same as a pipe or tubeand intended to insert into a Press-Connec
22、t fitting.3.1.3 failure, nthe condition of not achieving the desiredperformance, as evidenced by leakage or joint separation.3.1.4 fitting, nconnecting device used to join multiplepipes or tubes or other fittings together to create a workingsystem.3.1.5 joint, ninterface between the fitting and pipe
23、 or tubewhere the seal is maintained and mechanical holding strengthis applied or maintained.3.1.6 leakage, nthe escape of fluid or gas from any hole inthe pressure containment wall, sufficient to drip or flow fromthe point of formation or gas bubbles rising to the surface afterthe first minute of s
24、ubmersion.3.1.7 P designation, nindicates a Press-Connect fittingend (that is, P NPT).3.1.8 permanent, ncannot be disassembled and reusedafter initial assembly.3.1.9 pipe, nhollow cylindrical shape used to transportliquids, gases, or oil. Pipe is specified by nominal outsidediameter (OD) and schedul
25、e (wall thickness).3.1.10 press connection, ntype of fitting joint that attachesdirectly to pipe or tube by mechanical deformation of the pipe,tube or fitting or combination creating a seal and restrainedjoint. The joint is created by use of an elastomeric seal ormechanical deformation, or both. Mec
26、hanical deformation isachieved by use of an electro-hydraulic pressing tool. Press-Connect ends may vary by design as found in Fig. 1.3.1.11 rated pressure, nthe manufacturers recommendedmaximum in-service pressure at a defined temperature.3.1.12 re-test, nperformed when the original test speci-men
27、leaks or separates during testing as a result of any causethat is not related to the design of the fittings being qualified.3.1.13 specimen, na prepared assembly consisting of fit-tings assembled onto a preselected pipe or tube. The specimenis placed into a controlled environment and tested to deter
28、mineif the assembly meets the specified test requirements.3.1.14 test pressure, nselected pressure used duringtesting, based upon the rated pressure of the fitting, pipe ortube.3.1.15 tube, nhollow thin-walled cylindrical product thatis usually specified with respect to inside diameter (ID) andwall
29、thickness.4. Classification4.1 Press-Connect fittings shall be classified into the follow-ing categories:4.1.1 Material (see 4.2).4.1.2 Rated operating pressure (see 4.3).4.1.3 Elastomeric Seals (see 4.4).4.2 Fittings shall be made from one or more of the followingmaterial grades:4.2.1 Grade ACarbon
30、 steel.4.2.2 Grade BStainless steel.4.2.3 Grade CCopper and Copper-Alloy.4.2.4 Grade DCopper-nickel.4.2.5 Grade EBrass.4.3 The fittings rated pressure shall be one of the followingclasses:4.3.1 Class 1100 psi (0.69 MPa) maximum.4.3.2 Class 2200 psi (1.38 MPa) maximum.4.3.3 Class 3300 psi (2.07 MPa)
31、maximum.4.4 Elastomeric seals:4.4.1 Type 1Ethylene Propylene Diene Monomer(EPDM).3Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Two Park Ave., New York, NY 10016-5990, http:/www.asme.org.4Available from International Association of Classification Soc
32、ieties (IACS)Limited, Permanent Secretariat, 6th Floor, 36 Broadway, London SW1H 0BH, UK,http:/www.iacs.org.uk.5Available from International Organization for Standardization (ISO), ISOCentral Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,Geneva, Switzerland, http:/www.iso.org.6A
33、vailable from American Welding Society (AWS), 8669 NW 36 St., #130,Miami, FL 33166-6672, http:/www.aws.org.F3226/F3226M 16124.4.2 Type 2Hydrogenated Nitrile Butadiene Rubber(HNBR).4.4.3 Type 3Fluoro-Elastomer or Synthetic FluorinatedRubber (FKM).NOTE 1When multiple components resulting in more than
34、onematerial grade are specified within an assembly, the combination of gradesused shall be galvanically compatible.NOTE 2Rated pressures may differ within the size range beingqualified. Pressures indicated are at ambient temperature.5. Ordering Information5.1 Orders under this specification shall in
35、clude the follow-ing:5.1.1 ASTM designation, title, number, and year of issue;5.1.2 Quantity of fittings;5.1.3 Size;5.1.3.1 Nominal pipe size (NPS) and wall thickness (sched-ule).5.1.3.2 Tube size, outside diameter (OD) (actual or nomi-nal) and wall thickness (dimension in decimal fraction ofinches
36、or type K, L, M).5.1.4 Material;5.1.5 Class (operating pressure rating);5.1.6 Configuration (elbow, cross, union, coupling, etc.);5.1.7 Supplementary requirements, if any;5.1.8 Other requirements agreed to between the purchaserand the manufacturer; and5.1.9 Inspection and acceptance as agreed upon b
37、etween thepurchaser and the supplier.5.2 Optional Ordering Requirements:5.2.1 Certification (see Section 15).6. Materials and Manufacture6.1 MaterialMaterial(s) shall conform to a nationallyrecognized standard or may be other materials as agreed tobetween the manufacturer and the purchaser.6.1.1 Fit
38、tings may be manufactured from wrought bars,forgings, castings, pipe, or tube.6.2 Carbon Steel Fittings:6.2.1 Carbon steel fittings shall be made from materialmeeting the requirements of Specifications A53/A53M, Type Eand S, A135/A135M,orA795/A795M.6.3 Stainless Steel Fittings:6.3.1 Stainless steel
39、fittings shall be made from materialmeeting the requirements of Specifications A312/A312M,A269,orA276.FIG. 1 Metallic Press-Connect Fitting Joints (Typical, But Not Limited To)F3226/F3226M 16136.4 Copper and Copper-Alloy Fittings:6.4.1 Wrought copper fittings shall be made from materialmeeting the r
40、equirements of Specifications B584 or B88.6.4.2 Cast coppers alloy fittings shall be made from materialmeeting the requirements of Specifications B584 or B62.6.5 Copper-Nickel Fittings:6.5.1 Copper-nickel fittings shall be made from materialmeeting the requirements of Specifications B466/B466M orB46
41、7.6.6 Brass Fittings:6.6.1 Machined brass fittings shall be made from materialmeeting the requirements of Specifications B140/B140M, B16/B16M, B124/B124M, B371/B371M,orB967/B967M.6.6.2 Forged brass fittings shall be made from materialmeeting the requirements of Specification B283.6.7 Flow of GrainIf
42、 machined from hot- or cold-drawnbars fittings shall have their longitudinal axis parallel to thelongitudinal axis of the bar with at least the center one third ofthe bar removed during the manufacturing process unlesstesting shows the center material to be free of injurious defects.6.8 Material Qua
43、lityMaterial shall be of such quality andpurity that the finished product shall have the properties andcharacteristics to meet the performance requirements of thisspecification.NOTE 3The term “recovered materials” is interpreted as thosematerials that have been collected or recovered from solid wast
44、e andreprocessed to become a source of raw material, as opposed to extra virginraw materials.6.9 Seal MaterialsSeals shall be as specified in 4.4.6.9.1 Seal materials shall meet the minimum property andtest requirements specified in Classifications D2000.6.9.2 Only seal lubricants as specified by th
45、e manufacturershall be used.6.10 Surface Applications and CoatingsSurface applica-tions and coatings if applicable, shall be applied and tested inaccordance with a nationally recognized standard or may beother materials as agreed to between the manufacturer and thepurchaser.6.11 FabricationIf fabric
46、ated from two or more parts, thecomponents may be welded or brazed.6.11.1 Welding procedure qualification and welding opera-tor performance qualification shall be in accordance withASME Section IX.6.11.1.1 The welding procedure qualification test shall du-plicate the joint configuration to be used i
47、n production.6.11.2 Taper pipe threads shall conform to ASME B1.20.1.6.11.3 Brazed copper connections shall conform to ANSI/AWS A5.8M/A5.8 and AWS B2.2/B2.2M.6.12 Processing Stainless Steel ForgingsAustenitic stain-less steel components manufactured by hot forge or othersensitizing processes shall b
48、e solution annealed and certifiedfree of intergranular precipitation. Practice A262 shall be usedto evaluate carbide precipitation in stainless steels.7. Performance Requirements7.1 Testing RequirementsFittings Shall be subjected to thestandard performance tests specified in Section 13.7.1.1 Specime
49、ns can be reused for other primary tests aslong as all requirements herein are complied with for each test.7.1.2 Tests shall be repeated any time changes are made inthe design, material, or manufacturing process, which in theopinion of the purchaser, may degrade performance.7.2 Intermixing of SubcomponentsThe intermixing by thepurchaser of subcomponents of the same design, but ofdifferent brands or trade names, is not permitted.7.3 Qualification RequirementsTesting shall use speci-mens of the same type, grade (or com
