1、Designation: F722 82 (Reapproved 2014) An American National StandardStandard Specification forWelded Joints for Shipboard Piping Systems1This standard is issued under the fixed designation F722; the number immediately following the designation indicates the year of originaladoption or, in the case o
2、f revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscriptepsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers typical details of welded jointscommonly used in shipboard piping sy
3、stems. These joints andother joints may be used provided the welding procedures usedhave been qualified in accordance with the applicable regula-tory rules and regulations.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconvers
4、ions to SI units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 Federal Standards:Code of Federal Regulations Title 46 Shipping, Parts 30 to402Code of Federal Regulations Title 46 Shipping, Parts 41 to692Code of Federal Regulations Title 46 Shipping,
5、 Parts 140 to1492Rules for Building and Classing Steel Vessels33. Application, Service, Limitations, and List of WeldJoint Details3.1 Details of welded joints, including application, service,and limitation notes, are provided in the appropriate figures, asfollows:3.1.1 Butt-Welded Joints for Pipes,
6、Valves, Fittings, andFlanges:Fig. 1 Butt Joint, SquareFig. 2 Butt Joint, V-GroovedFig. 3 Butt Joint, V-Grooved, Welded Both SidesFig. 4 Butt Joint, Double V-Grooved, Welded Both SidesFig. 5 Butt Joint, Compound Bevel V-Grooved, WeldedBoth SidesFig. 6 Butt Joint, V-Grooved, Miter TypeFig. 7 Butt Join
7、t, V-Grooved, Welded with Bevel End-TypeBacking RingFig. 8 Butt Joint, Compound Bevel V-Grooved, Weldedwith Bevel End-Type Backing RingFig. 9 Butt Joint, V-Grooved Welded with Bevel EndLug-Type Backing RingFig. 10 Butt Joint, V-Grooved, Welded with Square End-Type Backing RingFig. 11 Butt Joint, V-G
8、rooved, Welded with ConsumableInsert RingFig. 12 Butt Joint, Compound Bevel V-Grooved, Weldedwith Consumable Insert RingFig. 13 Butt Joint, U-Grooved, Welded with ConsumableInsert RingFig. 14 Butt Joint, V-Grooved, Welded with ConsumableInsert RingFig. 15 Butt Joint, Socket Weld to Socket Weld Valve
9、,Fitting or Flange Welded on Pipe NippleFig. 16 Butt Joint, Transition between Unequal Inside andOutside Diameter Components3.1.2 Fillet Welded Joints for Valves, Fittings, and Flanges:Fig. 17 Fillet Welded Sleeve-Type Pipe CouplingFig. 18 Fillet Welded Socket Weld Fitting or ValveFig. 19 Fillet Wel
10、ded Socket Weld-FlangeFig. 20 Double Fillet Welded Slip-On Flange (Forged)Fig. 21 Double Fillet Welded Slip-On Flange (Plate Type)Fig. 22 Fillet Welded Slip-On Flange (Plate Type), SingleBevel3.1.3 Fabricated Joints:Fig. 23 Fillet Welded Internal Root ConnectionFig. 24 Fillet Welded External Root Co
11、nnectionFig. 25 Fillet Reinforced External Root Connection SingleBevelFig. 26 Fillet Reinforced External Root Connection, SingleBevel, Welded Both SidesFig. 27 Fillet Reinforced External Root Connection, SingleBevel, Welded with Square End Backing RingFig. 28 Fillet Reinforced Internal Root Connecti
12、on, SingleBevel, Welded with Square End Backing Ring1This 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 edition approved Nov. 1, 2014. Published November 2014.
13、 Originallyapproved in 1981. Last previous edition approved in 2008 as F722 82 (2008).DOI: 10.1520/F0722-82R14.2Available from U.S. Government Printing Office Superintendent of Documents,732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http:/www.access.gpo.gov.3Available from American B
14、ureau of Shipping (ABS), ABS Plaza, 16855Northchase Dr., Houston, TX 77060, http:/www.eagle.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.4 Outlet and Boss Connections:Fig. 29 Fillet Reinforced Boss Connection Without Pilot,
15、Single BevelFig. 30 Fillet Reinforced Boss Connection with Pilot, SingleBevelFig. 31 Fillet Reinforced Boss Connection (Couplet) withIntegral Backing RingFig. 32 Fillet Reinforced External Root Connection, SingleBevel with Integrally Reinforced OutletFig. 33 Fillet Reinforced External Root Connectio
16、n WeldedBoth Sides, Single Bevel with Integrally Reinforced Outlet4. Piping Classifications and Butt Weld Reinforcements4.1 Piping classifications in accordance with Subpart 56.04of USCG Regulations apply to this specification. For defini-tions of ABS Group I and II Pipe Connections, see ABS Rules,S
17、ection 30, Paragraph 30.13.4.2 Maximum thickness of butt weld reinforcements inaccordance with Subpart 56.70, Table 56.70-15, of USCGRegulations are listed in Table 1.5. Keywords5.1 backing ring pipe welds; boss connections; flangewelds; miter joint weld; pipe welds; root connections; sleevepipe wel
18、ds; socket welds; welded joints18 in.316 in.=3mm5mmApplicationClass II pipingSystems or ServiceFor services such as gravity drains (including plumbing),vents, and overflows.Remarks1. Root of weld need not be ground.FIG. 1 Butt Joint, Square116 in.18 in.78 in.=2mm3mm22 mmApplicationClass II pipingSys
19、tem or ServiceAll provided root of weld is visually inspected wherepossible to ensure complete weld penetration.Remarks1. For services such as vents, overflows, and gravity drains (includ-ing plumbing) the root of the weld need not be ground.FIG. 2 Butt Joint, V-Grooved116 in.18 in.78 in.=2mm3mm22 m
20、mApplicationClass I and II piping above 2-in. NPSSystem or ServiceAllRemarks1. Internal weld shall be made first and ground, chipped, or cleanedby some other means to assure sound welds.2. The “L” dimension should be held to a minimum to facilitate welding andinspection on the inside surface of the
21、pipe.FIG. 3 Butt, Joint, V-Grooved, Welded Both Sides116 in.18 in.78 in.=2mm3mm22 mmApplicationClass I and II piping above 2-in. NPSSystem or ServiceAllRemarks1. Internal weld shall be made first and ground, chipped, or cleanedby some other means to assure sound welds.2. The “L” dimension should be
22、held to a minimum to facilitate welding andinspection on the inside surface of the pipe.FIG. 4 Butt Joint, Double V-Grooved, Welded Both SidesF722 82 (2014)2in.mm116218334197822ApplicationClass I and II piping above 2-in. NPSSystems or ServiceAllRemarks1. Internal weld shall be made first and ground
23、, chipped, or cleanedby some other means to assure sound welds.2. The “L” dimension should be held to a minimum to facilitate welding andinspection on the inside surface of the pipe.FIG. 5 Butt Joint, Compound Bevel V-Grooved, Welded BothSides116 in.18 in.78 in.=2mm3mm22 mmApplicationClass II piping
24、 where use will not cause objectionable pressuredrop or turbulence.System or ServiceAll provided root of weld is visually inspected wherepossible to ensure complete weld penetration.Remarks1. For services such as vents, overflows, and gravity drains (includ-ing plumbing), the root of the weld need n
25、ot be ground.2. Miter segments shall be designed in accordance withANSI B31.1, paragraph104.33, and 46 CFR 56.07-10(f).FIG. 6 Butt Joint, V-Grooved, Miter Typein.mm116218331657822ApplicationClass I and II pipingSystem or ServiceAll, except as noted in remarksRemarks1. Backing ring may be tack-welded
26、 in place to facilitate fabrication.2. When used in the following services, backing rings shall be removed.(A) Lube oil service discharge piping from the lube oil pumps to the reductiongears, HP and LP turbines, and lube oil gravity tank.(B) Superheated steam outlet piping from the main boilers to t
27、he HP and LPturbines and turbo generators and desuperheated steam from the main boilers toturbine driven main feed pumps.(C) Central hydraulic systems.FIG. 7 Butt Joint, V-Grooved, Welded with Bevel End-Type Back-ing Ringin.mm1162183146381034197822ApplicationClass I and II pipingSystem or ServiceAll
28、, except as noted in remarksRemarks1. Backing ring may be tack-welded in place to facilitate fabrication.2. When used in the following services, backing rings shall be removed.(A) Lube oil service discharge piping from the lube oil pumps to the reductiongears, HP and LP turbines, and lube oil gravit
29、y tank.(B) Superheated steam outlet piping from the main boilers to the HP and LPturbines and turbo generators and desuperheated steam from the main boilers toturbine driven main feed pumps.(C) Central hydraulic systems.FIG. 8 Butt Joint, Compound Bevel V-Grooved, Welded withBevel End-Type Backing R
30、ingF722 82 (2014)378 in. = 22 mmApplicationClass I and II pipingSystems or ServiceAll, except as noted in remarksRemarks1. Backing ring may be tack-welded in place to facilitate fabrication2. When used in the following services, backing rings shall be removed.(A) Lube oil service discharge piping fr
31、om the lube oil pumps to the reductiongears, HP and LP turbines, and lube oil gravity tank.(B) Superheated steam outlet piping from the main boilers to the HP and LPturbines and turbo generators and desuperheated steam from the main boilers toturbine driven main feed pumps.(C) Central hydraulic syst
32、ems.FIG. 9 Butt Joint, V-Grooved Welded with Bevel End Lug-TypeBacking Ringin.mm116218331657822ApplicationClass I and II pipingSystems or ServiceAllRemarks1. After welding, backing ring shall be machined flush with insidediameter of pipe or fitting.FIG. 10 Butt Joint, V-Grooved, Welded with Square E
33、nd-TypeBacking Ringin.mm1640.4132111627822ApplicationClass I and II pipingSystem or ServiceAllRemarks1. Internal misalignment of pipes shall not exceed116 in. (2 mm).2. Consumable insert ring shall be centered before welding.FIG. 11 Butt Joint, V-Grooved, Welded with Consumable InsertRingin.mm1640.4
34、1321116234197822ApplicationClass I and II pipingSystem or ServiceAllRemarks1. Internal misalignment of pipes shall not exceed116 in. (2 mm).2. Consumable insert ring shall be centered before welding.FIG. 12 Butt Joint, Compound Bevel V-Grooved, Welded withConsumable Insert Ringin.mm1640.413211162316
35、5ApplicationClass I and II PipingSystem or ServiceAllRemarks1. Internal misalignment of pipes shall not exceed116 in. (2 mm).2. Consumable insert ring shall be centered before welding.FIG. 13 Butt Joint, U-Grooved, Welded with Consumable InsertRingF722 82 (2014)40.020 in. = 0.51 mm.ApplicationClass
36、I and II pipingSystem or ServiceAllRemarks1. Internal misalignment of pipes shall not exceed132 in. (1 mm).2. Consumable insert ring shall be centered before welding.FIG. 14 Butt Joint, V-Grooved, Welded with Consumable InsertRing116 in. = 2 mm14 in. = 6 mm38 in. = 10 mmApplicationFittings: See Fig.
37、 18. Flanges: See Fig. 19.System or ServiceSee Fig. 18 and Fig. 19.Remarks1. Size of weld shall be equal to or greater than “T.2. For Class I piping, depth of insertion of the pipe nipple into the fitting shall notbe less than38 in. (10 mm).3. Weld to be deposited in a minimum of two passes unless s
38、pecificallyapproved otherwise in a special procedure qualification.FIG. 15 Butt Joint, Socket Weld to Socket Weld Valve, Fitting orFlange Welded on Pipe NippleFIG. 16 Butt Joint, Transition Between Unequal Inside and Out-side Diameter Components116 in.=2mmApplicationClass I piping 3-in. NPS max wher
39、e not subject to full radiographyby 46 CFR Table 56.95-10. Class II piping all sizes.Systems or ServiceAllRemarks1. Size of weld shall be 1.4 T min but not less than18 in. (3 mm).2. For Class I piping, depth of insertion of pipe, tube, or fitting in sleeve shall notbe less than38 in. (10 mm).3. Weld
40、 to be deposited in a minimum of two passes unless specificallyapproved otherwise in a special procedure qualification.4. For Class I piping, the inside diameter of the sleeve shall not exceed theoutside diameter of the pipe, tube, or fitting by more than 0.080 in. (2.03 mm).5. Couplings may be used
41、 with flat or beveled end pipes and fitting.FIG. 17 Fillet Welded Sleeve-Type Pipe CouplingF722 82 (2014)5116 in.=2mmApplicationClass I piping 3-in. NPS max where not subject to full radiographyby 46 CFR Table 56.95-10. Class II piping all sizes.System or ServiceAll, except socket welds shall not be
42、 used where severeerosion or crevice corrosion is expected to occur.Remarks1. Size of weld shall be 114 T min but not less than18 in. (3 mm).2. For Class I piping, depth of insertion of pipe or tube into the fitting shall not beless than38 in. (10 mm).3. Weld to be deposited in a minimum of two pass
43、es unless specificallyapproved otherwise in a special procedure qualification.FIG. 18 Fillet Welded Socket Weld Fitting or Valve116 in. = 2 mm.Application Class I piping 3-in. NPS max for 600# and lower classes and212-in. NPS for 900 and 1500# classes. 3-in. size not permitted where subject tofull r
44、adiography by 46 CFR Table 56.95-10. Class II piping all sizes.System or ServiceAll, except socket welds shall not be used where severeerosion or crevice corrosion is expected to occurRemarks1. Size of Weld W1 shall be 1.4 T min. for Class II piping, size of weldmay be limited to1732 in. (13 mm) max
45、.2. Weld to be deposited in a minimum of two passes unless specificallyapproved otherwise in a special procedure qualification.FIG. 19 Fillet Welded Socket Weld FlangeApplicationClass I and II piping not to exceed the service pressure tempera-ture ratings for the 300# and lower classes. Slip-on flan
46、ges shall not be used onClass I piping where subject to full radiography by 46 CFR Table 56.95-10.System or ServiceAllRemarks1. Size of Weld W1 shall be 1.4 T min. for Class II piping, size of weldmay be limited to1732 in. (13 mm) max.2. Size of Weld W2 shall be equal to “T or14 in. (6 mm), whicheve
47、r is smaller.3. Dimension X shall be equal to T plus116 in. (2 mm) min. for Class II piping,Dimension X may be limited to38 in. (10 mm).FIG. 20 Double Fillet Welded Slip-on Flange (Forged)ApplicationClass II piping not exceeding 150 psi (1034 kPa) or 450F (232C)System or ServiceAllRemarks1. Size of
48、Weld 8a W1 shall be 1.4 “T min but may be limited to1732in. (13 mm).2. Size of Weld W2 shall be equal to “T or14 in. (6 mm), whichever is smaller.3. Distance X shall be T plus116 in. (2 mm) min but may be limited to38 in. (10mm).FIG. 21 Double Fillet Welded Slip-on Flange (Plate Type)F722 82 (2014)6
49、14 in.=6mmApplicationClass II piping not exceeding 150 psi (1034 kPa) or 650F (343C)System or ServiceAllRemarks1. Size of Weld W1 shall be 1.4 “T min but may be limited to1732 in.(13 mm).2. Size of Weld W2 shall be equal to “T or14 in. (6 mm), whichever is smaller.3. Distance X shall be “T plus116 in. (2 mm) min but may be limited to38 in. (10mm).FIG. 22 Fillet Welded Slip-on Flange (Plate-Type) Single Bevel18
