1、Designation: F 708 92 (Reapproved 2004)An American National StandardStandard Practice forDesign and Installation of Rigid Pipe Hangers1This standard is issued under the fixed designation F 708; the number immediately following the designation indicates the year oforiginal adoption or, in the case of
2、 revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This practice
3、 covers acceptable methods of fabricatingand installing rigid pipe hangers used to support shipboardpiping systems with temperatures of 650F (343C) or less.1.2 This practice provides guidance for the design of hangercaps, straps and standoffs, selection of hanger and hanger linermaterials, hanger bo
4、lting, and hanger spacing.1.3 Other hanger designs may be used provided they resultin an adequately supported vibration-free piping system andare compatible with the intended system service and tempera-ture limitations.1.4 The values stated in inch-pound units are to be regardedas the standard. The
5、values given in parentheses are forinformation only.1.5 This standard does not purport 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
6、 regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A 307 Specification for Carbon Steel Bolts and Studs,60 000 PSI Tensile Strength3. Terminology3.1 Definitions:3.1.1 linerthe material used to isolate a pipe from itshanger.3.1.2 rider bara protective strip of material in
7、stalledbetween the pipe and the hanger where frequent linear move-ment of the pipe is expected.3.1.3 rigid pipe hangera device that transfers the loadimposed by the piping, insulation, and system medium to thesupporting structure.3.1.4 standoffthe rigid member that connects the hangerstrap, saddle,
8、or band to the supporting structure. A standoff isusually made up of one or more pieces of flat bar, pipe, anglebar, or flanged plate to suit a specific location.4. List of Pipe Hanger Styles4.1 This practice incorporates 26 pipe hanger assemblies asshown on Figs. 1-12(c) as follows:Hanger Fig. No.S
9、plit cap hanger (single leg standoff) 1(a)Split cap hanger (dual leg standoff) 1(b)Split cap hanger (chair type) 1(c)Strap hanger 2(a)Strap hanger (assembled for clearance with rider bar) 2(b)Strap hanger (assembled for clearance with TFE-fluorocarbonstrip)2(c)Welded hanger (flat bar U-type) 3(a)Wel
10、ded hanger (round bar U-type) 3(b)Welded hanger (square bar U-type) 3(b)U-bolt hanger 4(a)U-bolt hanger (assembled for clearance with rider bar) 4(b)U-bolt hanger (assembled for clearance with TFE-fluorocarbonstrip)4(c)Welded hanger (single leg standoff welded direct to pipe) 5(a)Welded hanger (dual
11、 leg standoff welded direct to pipe) 5(b)“J” band type hanger (insulated pipe) 6(a)“J” band type hanger (bare pipe) 6(b)Nelsont hanger37Clamp hanger assembled with mounting channel 8Poly-block twin clamp hanger (assembled with welding plate)4,59(a)Poly-block twin clamp hanger (assembled with welding
12、 stud)4,59(b)Poly-block twin clamp hanger (assembled with mounting channel)4,59(c)Crimp-on weld stud-type hangers 10Banded weld stud-type hanger 11Poly-block single-clamp hanger (assembled with welding plate)512(a)1This practice is under the jurisdiction of ASTM Committee F25 on Ships andMarine Tech
13、nology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved May 1, 2004. Published May 2004. Originallyapproved in 1981. Last previous edition approved in 1997 as F 708 92 (1997).2For referenced ASTM standards, visit the ASTM website, www.as
14、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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Poly-blo
15、ck single-clamp hanger (assembled with welding stud)512(b)Poly-block single-clamp hanger (assembled with mounting channel)512(c)5. Hanger Designs5.1 Figs. 1-5 and Fig. 6(a) hangers are designs generallymanufactured by shipyards or their subcontractors. See alsoTables 1-6.5.2 Fig. 6, Fig. 8, Fig. 10,
16、 and Fig. 11 hangers are commer-cially available from various vendors. Fig. 8, Fig. 10, and Fig.11 hangers are primarily designed for use in supportingelectrical cables, but are suitable for hanging small size pipeand tubing.5.2.1 The Fig. 7 hanger3is a specific design that has beenpatented by Nelso
17、n Division of TRW.5.2.2 The Fig. 9 and Fig. 12 hangers4,5are primarilydesigned for use when supporting multiple runs of pipe ortubing.6. Materials and Manufacture6.1 Hanger materials for straps, saddles, and U-bolts forFigs. 1-5 hangers and standoffs should be fabricated fromcommercial quality carbo
18、n steel. The steel should be a weld-able grade with a minimum tensile strength of 47 ksi (324MPa) and capable of being bent at room temperature through90 to an inside radius equal to the material thickness withoutcracking on the outside of the bend.6.2 Hangers in Fig. 1, Fig. 6, Fig. 7, Fig. 10, and
19、 Fig. 11 aregenerally manufactured from carbon steel. Fig. 8 is furnishedin carbon steel and stainless steel. Fig. 9 and Fig. 12 hangerclamp halves are injected molded plastic furnished with carbonsteel or stainless steel hardware.6.3 Bands and buckles for Fig. 6 and Fig. 11 hangers shouldbe carbon
20、steel electroplated zinc or stainless steel.6.4 Hanger bolts and nuts should be regular series hex typeelectroplated zinc with unified national coarse threads Class 2fit in accordance with Specification A 307, Grade B.6.5 Table 7 is a listing of hanger liner materials generallyused to isolate the pi
21、pe from the hanger (see 9.1.1).7. Application and Limitations7.1 Unless otherwise noted, application and limitations onthe use of various style hangers should be as noted with eachhanger detail.8. Hanger Spacing8.1 Table 8 provides general guidance in determining pipehanger spacing. Special consider
22、ation should be given to areasof concentrated loads, such as risers, valves, or groups offittings, and to piping configurations that could create rota-tional forces.9. General Requirements9.1 The following general requirements and conditions areapplicable to all styles of hangers:9.1.1 Hangers need
23、not be lined unless the hanger and pipeare of dissimilar material, or when the system internal operat-ing temperature is 300F (149C) and over, or 50F (10C) andunder and the heat transmitted to the other side of the structureto which the hanger is attached may be objectionable. Forhanger liner materi
24、als, see 6.5.9.1.2 All hanger bolts within tanks or other inaccessibleareas shall be secured with lock nuts, lock washers, or by someother means.9.1.3 Pipe hangers and standoffs located in areas subject tocorrosion, such as in bilges, ballast tanks, and areas exposed tothe weather, should be zinc-pl
25、ated or blasted and coated withinorganic zinc or coated with the same material as that of thesurrounding area.9.1.4 Standoffs fabricated from pipe should not be usedwithin tanks.9.1.5 Where thermal growth of piping exceeds 0.100 in. (2.5mm) or long runs of pipe are affected by ship flexing, such asl
26、ong runs on the weather deck, or long runs in longitudinalpassageways, a metal rider bar attached to the pipe or aTFE-fluorocarbon wear strip should be used in conjunctionwith a clearance type hanger, or other means should beprovided to prevent chaffing of the pipe.9.1.6 Consideration should be give
27、n to thermal growth ofthe piping when selecting or locating hangers so as not tooverstress the piping or hangers.9.1.7 Nonmetallic pipe should be hung in accordance withthe manufacturers recommendations.10. Workmanship, Finish, and Appearance10.1 Finished hanger components shall have a workman-like
28、appearance and be free of cracks or other injurious defects.Surface scale, rust, welding slag, or any foreign material (suchas oil) shall be removed before painting or coating.3The sole source of supply of the apparatus known to the committee at this timeis TRW Nelson Div., Toledo Ave. and E. 28th S
29、t., Lorain, OH 44055. If you areaware of alternative suppliers, please provide this information to ASTM Interna-tional Headquarters. Your comments will receive careful consideration at a meetingof the responsible technical committee1, which you may attend.4The sole source of supply of the apparatus
30、known to the committee at this timeis Stauff Corp., 41 Newman St., Hackensack, NJ 07601. If you are aware ofalternative suppliers, please provide this information to ASTM InternationalHeadquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee1,
31、which you may attend.5The sole source of supply of the poly-block hangers known to the committee atthis time is Behringer Corp., 108 Jabez St., Newark, NJ 07105. If you are aware ofalternative suppliers, please provide this information to ASTM InternationalHeadquarters. Your comments will receive ca
32、reful consideration at a meeting of theresponsible technical committee1, which you may attend.F 708 92 (2004)2TABLE 1 Dimensions for Split Cap Hangers (Fig. 1)ABCDEFGHJ K MNominalPipeSize, in.CopperWaterTubeSize,in.Size ofFlat Bar,min,in.AInsideDiam-eter ofStrap,in.ACenterlineofPipe toCenterlineofBo
33、lt,min,in.AHeightof Strap,in.ACenterlineofBolt toEnd ofStrap,in.AClear-anceat Bolts(withoutliner),in.ABolt Di-ameter,min,in.ACenterlineofBolt toHangerLeg,in.ALength,max,in.Size of StandoffSize ofWeld,in.AFlat Bar,min,in.ASchedule80 Nom-inal PipeSize,min,in.AAngle Bar,min, in.A.3818 x3434151631651618
34、1412 6316 x341234 x34 x181814 .18 x34131615161364516181412 6316 x341234 x34 x1818.1218 x3478 114516181412 6316 x341234 x34 x181838 .18 x341516 1932516181412 6316 x341234 x34 x1818.5818 x34 11116516516181412 6316 x341234 x34 x181812 .18 x34 118 1182364516181412 6316 x341234 x34 x1818.3418 x34 118 118
35、38516181412 6316 x341234 x34 x181834 .18 x1 1516 1141532381851658 614 x134 1x1x1418. 118 x1 138 11412381851658 614 x134 1x1x14181 .18 x1 1916 1381932381851658 614 x134 1x1x1418. 11418 x1 158 13858381851658 614 x134 1x1x1418. 11218 x1 178 191634381851658 614 x134 1x1x1418114 .18 x1 11516 191649643818
36、51658 614 x134 1x1x1418112 .18 x1 2516 111165764381851658 614 x134 1x1x1418. 218 x1 238 11316 1381851658 614 x134 1x1x14182 .18 x1 258 2118381851658 614 x134 1x1x1418. 21214 x1 278 214 114716183834 614 x134 1x1x1418212 .14 x1 318 238 1516716143834 814 x134 1x1x14532. 314 x1 338 212 1716716143834 814
37、 x134 1x1x14532. .14 x1 334 21116 158716143834 814 x134 1x1x14532. 31214 x1 378 21316 11116716143834 814 x134 1x1x14532312 .14 x1 414 21516 178716143834 814 x134 1x1x14532. 414 x114 438 314 11516716143834 1014 x134 1x1x145324 .14 x114 434 338 21169163812 11014 x114 1114 x114 x145325 .14 x114 51316 3
38、1516 21932916381214 x114 1114 x114 x145326 .14 x2 678 412 3189163812 11214 x2 1 2x2x385328 .14 x2 878 538 418343858 114 1214 x2 112 2x2x3831610 .38 x2 11 678 518341258 114 1438 x2 112 2x2x3831612 .38 x 2 13 778 618341258 114 1438 x2 112 2x2x3831614 .12 x2 1414 834 61116785834 112 1412 x2 112 2x2x383
39、1616 .12 x2 1614 934 71116785834 112 1412 x2 112 2x2x3831618 .12 x212 1814 11 81116 15878 134 1412 x212 2212 x212 x3873220 .12 x212 2014 12 91116 15878 134 1412 x212 2212 x212 x3873222 .12 x3 2214 1318 101116 11858 121412 x3 212 3x3x3873224 .12 x3 2414 1418 111116 1185812 x3 212 3x3x38732A1 in. = 25
40、.4 mm.F 708 92 (2004)3TABLE 2 Dimensions for Strap Hangers (Fig. 2)Nominal PipeSize, in.ASize of Flat Bar,min, in.ABInside Radiusof Strap, in.ACCenterline of Pipe toCenterlineof Bolt, min,in.ADHeight of Strap,in.AECenterline of Boltto End of Strap,in.AFBolt Diameter, min,in.A1418 3341332151612516143
41、818 3341532 158516141218 334916 1185164516143418 3 12132 114 138516118 3 12532 138 1143851611418 3 13132 1916 119323851611218 3 11332 11116 1131638516218 3516 2213163851621214 3916 238 25871638314 3 1178 21116 3147163831214 3 1218 21516 33471638414 3 114 238 338 431691612514 3 114 22932 31516 514916
42、12614 3 23716 412 651691612814 3 24716 538 851634581038 3 2512 678 101434581238 3 2612 778 121434581412 3 2718 834 133878341612 3 2818 934 153878341812 3 212 918 11 1738 1782012 3 212 1018 12 1938 1782212 3 3118 1318 2138 118 12412 3 218 1418 2338 118 1A1 in. = 25.4 mm.TABLE 3 Dimensions for Welded
43、Hangers (Fig. 3)Nominal PipeSize, in.Size of Bar Stock, min, in.AInside Radius ofStrap, in.ALength of Strap, in.ASize of Weld, in.AABC D E FGHFlat Bar Round Bar Square BarTightClear-anceFlat Bar Hanger,in.A Round orSquare BarHanger, in.ATightClear-ance1418 31214149321132732 1332213218183818 31214141
44、132 13329321532 233218181218 31214142764316423643564 131618183418 3 138381732193215322132293218316118 3 138382132 219322532 1181831611418 3 138385364576449646164 15161831611218 3 138386164116457641564 171618316218 3 13838 1316 114 118 158 111161831621214 3 11212 1716 112 138 1916 231614314 3 11212 1
45、34 11316 11116 178 25163161431214 3 11212 22116 11516 218 291631614414 3 1121212 214 2516 2316 238 2131631614514 3 1121212 22532 22732 22332 22932 33831614638 3 23434 3516 338 314 3716 4116316516838 3 23434 4516 438 414 4716 51163165161012 3 2118 1538 5716 5516 512 618145161212 318 1638 6716 6516 61
46、2 71214381458 3 3112 138 77116 61516 718 81838381658 312 138 88116 71516 818 91838381858 3 3112 138 99116 81516 918 101838382058 312 138 10 10116 91516 1018 111238122258 3 3112 138 11 11116 101516 1118 121238122458 312 138 12 12116 111516 1218 13123812A1 in. = 25.4 mm.F 708 92 (2004)4TABLE 4 Dimensi
47、ons for U-Bolt Hangers (Fig. 4)NOTE 1U-bolt dimensions are presently under review. Some sizesspecified in this table are considered to be excessive for the intendedservice and some are not commercially available as standard products. Arevision will be processed when the review is completed.NominalPipeSize, in.ARod Diameter,min, in.ABInsi
