1、Designation: F1298 90 (Reapproved 2012)An American National StandardStandard Specification forFlexible, Expansion-Type Ball Joints for MarineApplications1This standard is issued under the fixed designation F1298; the number immediately following the designation indicates the year oforiginal adoption
2、 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 the design, manufacture, andtesting of ball joints
3、 utilized for accommodating thermalexpansion and contraction, or mechanical movement of apipeline carrying fluid. The ball joints are intended for use insystems operating above 0F (18C).1.2 The following precautionary caveat pertains only to thetest methods portion, Section 7, of this specification:
4、 Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documen
5、ts2.1 ASTM Standards:2A395/A395M Specification for Ferritic Ductile IronPressure-Retaining Castings for Use at Elevated Tempera-turesF722 Specification for Welded Joints for Shipboard PipingSystems2.2 ANSI Standard:B 31.1 Power Piping32.3 American Society of Mechanical Engineers:4ASME Boiler and Pre
6、ssure Vessel Code, Section VIII,Division 1, Pressure Vessels Section IX, Welding andBrazing Requirements3. Ordering Information3.1 Each purchase order or inquiry for ball joints to thisspecification shall include the following as applicable:3.1.1 Title, number, and latest revision of this specificat
7、ion,3.1.2 Manufacturers part number or ball-joint type infor-mation,3.1.3 Materials for ball joint and seals, if other than to thisspecification,3.1.4 Service conditions,3.1.4.1 Minimum and maximum operating temperature(F),3.1.4.2 Maximum operating pressure (psig),3.1.5 Fluid media (internal),3.1.6
8、Atmosphere or media (external),3.1.7 ANSI pressure class, facing and drilling of flangedends, and pipe schedule or wall thickness of ends for weld endjoints,3.1.8 Special end connections as defined by the purchaser,3.1.9 Ball sphere or other special coatings, if required,3.1.10 Qualification test re
9、port, if required,3.1.11 Drawing requirements; for example, envelope draw-ing sufficiently detailed to describe the ball joint to be supplied,and3.1.12 Other tests to satisfy customer requirements.4. Materials and Manufacture4.1 All pressure retaining components shall be fabricatedfrom wrought or ca
10、st steel. Ductile iron complying withSpecification A395/A395M may be used for the ball jointretaining ring in services not above 350 psig (2.41 N/mm2)or450F (232C). Steel shall comply with one of the materialslisted in Section VIII, Division 1, of the ASME Code, or ANSIB 31.1.4.2 Bolting material sh
11、all be in accordance with ANSIB 31.1.4.3 Ball spheres shall be coated in accordance with themanufacturers standard practice or as specified by the custom-ers specification (see 3.1.9).1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct
12、responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved May 1, 2012. Published May 2012. Originallyapproved in 1990. Last previous edition approved in 2006 as F1298 90 (2006).DOI: 10.1520/F1298-90R12.2For referenced ASTM standards, visit the ASTM website, www.as
13、tm.org, orcontact ASTM Customer Service at serviceastm.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.
14、org.4Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.4 Corrosion shall be
15、considered in the design as set forthin UG-25 of the ASME Code, Section VIII, Division 1.4.5 Seals and packing material shall be suitable for theservice intended. This includes being adequate for the pressureand temperature rating and having sufficient resistance toattack by the fluid media and atmo
16、sphere specified in Section3.4.6 Welding procedure qualification, welder performancequalification, and welding materials shall be in accordancewith ANSI B 31.1 and Section IX of the ASME Code. Brazingor soldering shall not be used.5. Other Requirements5.1 Design:5.1.1 Ball joints shall be designed t
17、o conform to applicablesections of the latest edition of ANSI B 31.1.5.1.2 PackingThe design for containment of leakage shallbe of the manufacturers standard design and be qualified byprototype testing of 7.1.5.2 Pressure and Temperature Rating:5.2.1 The maximum allowable working pressure (MAWP)and
18、temperature rating for ball joints conforming to thisspecification shall be established by at least one of thefollowing methods:5.2.1.1 Proof test in accordance with the requirementsprescribed in paragraph UG-101 of Section VIII, Division 1, ofthe ASME Code. If burst type tests as outlined in paragr
19、aphUG-101(m) are used, it is not necessary to rupture thecomponent. In this case, the value of B to be used indetermining the MAWP shall be the maximum pressure towhich the component was subjected without rupture. Compo-nents that have been subjected to a hydrostatic proof test shallnot be offered f
20、or sale.5.2.1.2 Design calculations in accordance with the require-ments prescribed in Section VIII, Division 1, of the ASMECode.5.3 Each ball joint bolting or retainer nut shall be adjustedfor proper torque.5.4 Where welded construction is used for the fabrication ofpressure containing parts, welde
21、d joint design details shall bein accordance with Section VIII, Division 1, of the ASMECode and Specification F722. Except for fillet welds, all weldsshall be full penetration welds extending through the entirethickness of the shell.5.5 Inlet and outlet connections consisting of welded flangesand fi
22、ttings shall be in accordance with Specification F722.When radiography is required (see 8.2), all welds shall be buttwelds for Class I piping as required by Specification F722,except packing cylinders, drains, and similar ancillary connec-tions, which may be attached by fillet or socket welds.5.6 Th
23、readed pipe connections shall be limited to thefollowing services:3/4 in. (19 mm) NPS and under1500 psig (10.3 N/mm2) max1 in. (25 mm) NPS and under 1200 psig (8.27 N/mm2) max2 in. (50 mm) NPS and under 600 psig (4.14 N/mm2) max3 in. (76 mm) NPS and under 400 psig (2.76 N/mm2) max5.7 Threaded pipe j
24、oints above 2 in. (50 mm) NPS shall notbe used in systems that require radiographic examination (see8.2.2).6. Workmanship, Finish, and Appearance6.1 CleaningThe internal and external surfaces of the balljoint shall be cleaned of dirt and other foreign material using asuitable cleaner.6.2 Surface Pre
25、servationUnless otherwise specified bythe purchaser, the ball joint shall be coated in accordance withthe manufacturers standard practice.7. Test Methods or Analytical Methods7.1 Qualification Tests:7.1.1 A ball joint of each standard design shall be certifiedas having undergone the following qualif
26、ication tests. The balljoint shall not show leakage of the test fluid under theconditions of pressurization stipulated in each test.7.1.1.1 Flex Cycle TestThe ball joint shall be subjected to8000 flex cycles at MAWP and maximum rated temperatureover the rated flex angle. Each flex cycle shall consis
27、t ofrotating the ball joint from maximum flex angle on one sidethrough 0 to maximum flex angle on the other side and returnto the original position. The flex cycle rate shall not exceed 4cpm. At the end of 8000 cycles, MAWP shall be held for atleast12 h.7.1.1.2 Thermal CyclingBall joints rated above
28、 200Fshall be subjected to 100 saturated steam pressure cycles fromatmospheric pressure to MAWP and back to atmosphericpressure. Each cycle shall permit the joint to reach saturatedsteam temperature at MAWP and then cool to ambient tem-perature. At the end of test, MAWP shall be held for12 hatsatura
29、ted steam temperature.7.2 Production Tests:7.2.1 Each ball joint shall be subjected to a hydrostatic testconducted at 112 times the 100F (38C) rated maximumallowable working pressure of the ball joint. The test shall bemade with water or other fluid having a maximum viscosity of40 SSU at 125F (52C).
30、 Minimum duration of test shall be 15s for ball joints less than 2 in. (50 mm) nominal pipe size, 1 minfor ball joints 212 in. (63.5 mm) through 8 in. (203 mm), and3 min for larger sizes. The purpose of this test is to detect leaksand structural imperfections. No visible leakage is permitted.7.2.1.1
31、 The pressure-containing boundary components ofeach ball joint may be individually hydrostatically testedprovided that an assembled prototype has been subjected to ahydrostatic test as outlined in 7.2.1.7.2.1.2 The test arrangement shall be air-free prior topressurization.7.2.2 Ball joints of 2 in.
32、(50 mm) NPS and smaller withother than flanged connections may, at the option of themanufacturer, be air tested to the lesser of 1.2 times the MAWPor 80 psig (0.55 N/m2). The minimum duration of the test shallbe 15 s. Visually detectable leakage through the pressure-retaining walls is not acceptable
33、.7.2.2.1 If this option is exercised, the manufacturer shall beable to certify that a prototype from each production lot of thesame size ball joint was subjected to a hydrostatic test inaccordance with 7.2.1.F1298 90 (2012)28. Inspection8.1 Each finished ball joint shall be visually examined anddime
34、nsionally checked to ensure it corresponds to this speci-fication.8.2 Nondestructive Examination of Welds:8.2.1 All welds shall be visually examined in accordancewith ANSI B31.1.8.2.2 Welded inlet and outlet connections that are equal toor greater than 4 in. nominal diameter or greater than 0.375 in
35、.nominal wall thickness that are in the following services shallbe 100 % radiographically examined:Service Pressure, psig (N/mm2) Temperature, F (C)Fuel oil above 150 (1) or above 150 (65)Steam above 150 (1) or above 650 (343)Flammable cargo above 225 (1.55) or above 150 (65)Water above 225 (1.55) o
36、r above 350 (194)9. Keywords9.1 ball joints; marine pipeline; marine technology; ships;thermal contraction; thermal expansionASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are ex
37、pressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revi
38、sed, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you ma
39、y attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United Sta
40、tes. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).F1298 90 (2012)3
