1、Designation: F1298 90 (Reapproved 2018) 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 adoptio
2、n 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 joint
3、s 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 values stated in inch-pound units are to be regardedas standard. The values given in parentheses are math
4、ematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 The following precautionary caveat pertains only to thetest methods portion, Section 7, of this specification: Thisstandard does not purport to address all of the safety concerns,if any, associa
5、ted with its use. It is the responsibility of the userof this standard to establish appropriate safety, health, andenvironmental practices and determine the applicability ofregulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognize
6、d 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 Documents2.1 ASTM Standards:2A395/A395M Specification
7、for Ferritic Ductile IronPressure-Retaining Castings for Use at Elevated Tempera-turesF722 Specification for Welded Joints for Shipboard PipingSystems2.2 ANSI Standard:3B 31.1 Power Piping2.3 American Society of Mechanical Engineers:4ASME Boiler and Pressure Vessel Code, Section VIII,Division 1 Pres
8、sure 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 specification,3.1.2 Manufacturers part number or ball-join
9、t typeinformation,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 Atmosphere or media (external),3.1.7 ANSI pressure
10、 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 report, if required,3.1.11 Drawing requirements; for
11、 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 cast steel. Ductile iron complying withSpecification
12、 A395/A395M may be used for the ball jointretaining ring in services not above 350 psig (2.41 N/mm2)or1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current editi
13、on approved March 1, 2018. Published April 2018. Originallyapproved in 1990. Last previous edition approved in 2012 as F1298 90 (2012).DOI: 10.1520/F1298-90R18.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of
14、 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.4Available from American Society of Mechanical Engineers (ASME), ASMEInter
15、national Headquarters, Two Park Ave., New York, NY 10016-5990, http:/www.asme.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on sta
16、ndardization 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.1450F (232C). Steel shall comply with one of the materialslisted in Section VIII, Divisi
17、on 1, of the ASME Code, or ANSIB 31.1.4.2 Bolting material shall 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).4.4 Corrosion shall be considered in the design as set
18、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 atmosphere specified in Section3.4.6
19、 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 to conform to applicablesections
20、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 temperature rating for ball join
21、ts 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 paragraphUG-101(m) are used, it is not
22、 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 for sale.5.2.1.2 Design calculati
23、ons 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, welded joint design details shall bei
24、n 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 fittings shall be in accordance wi
25、th 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 ancillaryconnections, which may be attached by fillet or socket welds.5.6 Threaded pipe connections shall be l
26、imited to thefollowing services:34 in. (19 mm) NPS and under 1500 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 joints above 2 in. (50 mm) NPS shal
27、l 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 PreservationUnless otherwise specifie
28、d 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 qualification tests. The balljoint shall
29、 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 consist ofrotating the ball joint from m
30、aximum 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 200Fshall be subjected to 100 sat
31、urated 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 hatsaturated steam temperature.7.2 Producti
32、on 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). Minimum duration of test shall be
33、 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 The pressure-containing boundary
34、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.F1298 90 (2018)27.2.2 Ball joints of 2 in. (50 mm) NPS and sm
35、aller 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.7.2.2.1 If this o
36、ption 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 7.2.1.8. Inspection8.1 Each finished ball joint shall be visually examined anddimensionally checked to ensure it cor
37、responds to this speci-fication.8.2 Nondestructive Examination of Welds:8.2.1 All welds shall be visually examined in accordancewith ANSI B 31.1.8.2.2 Welded inlet and outlet connections that are equal toor greater than 4 in. nominal diameter or greater than 0.375 in.nominal wall thickness that are
38、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)Flammablecargoabove 225 (1.55) or above 150 (65)Water above 225 (1.55) or above 350 (194)9. Keywords9.1 bal
39、l 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 expressly advised that determination
40、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 revised, either reapproved or withdrawn
41、. 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 may attend. If you feel that your com
42、ments 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 States. Individual reprints (single or
43、 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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 90 (2018)3
