1、MIL-STD-22D 25 May 1979 SUPERSEDING 29 August 1977 MIL-STD-O022B(SHIPS) 8 May 1969, and 24 October 1956 MIL-STD-O022C(SH) MIL-STD-2.2A MILITARY STANDARD WELDED JOINT DESIGN Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-22D NOTICE 2 TH W 777
2、97LL 0065887 q W . MIL-STD-22D 25 May 1979 NAVAL SEA SYSTEMS C-D DEPARTMENT OP THE NAVY WASHINGTON, M: 20362 welded Joint Design MIL-STD-22D the Department of Defense. 1. This Military Standard is approved for u8e by all Departments and agencies of 2. Beneficial comments (recommendations, additions,
3、 deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 3112, Department of the Navy, Washington, DC 20362 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at
4、 the end of this document or by letter. ii Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I “ . MIL-STD-22D NOTICE 2 TH W 77777LL 0065888 6 W “ _ . MIL-STD-22D 25 May 1979 FOREWORD This standard contains structural and piping system weld joint desig
5、ns for ship which invokes this standard. The identification of the joint designs is as follows: construction. Joint designs shall be selected in accordance with the fabrication document The structural, machinery and pressure vessel joint numbering system is composed of four character groups. By mean
6、s of the four groups, a unique identification is assigned tq each joint design. As an example: e First cliaracter(s) letter(s) designates type Of joint: -W B - Butt joint C - Corner joint E - Edge joint L - Lap joint T - Tee joint P - Partial penetration Second character (number) designates number o
7、f sides welded: 1 - Welded one side -W 2 - Welded both sides Third character (letter) designates configuration joint: S - Square groove -ara D except that B less than 1/4 inch shall not be used. When calculated value of “D“ is greater than 0.107 inch. B = 4- S = B (to next larger 1/16 inch) except t
8、hat reinforcing fillet size should be not less than 1/4 inch nor greater than 1/2 inch. Where: D = effective width or the weld in shear e = required joint efficiency T = thickness of the weaker member (TB or T) R = Ultimate tensile strength of the weaker base metal R1 = shear strength of the weld me
9、tal 2 = land dimension (to the nearest 1/16 inch) TB = thickness of web member B.= base leg or depth of bevel S = size of reinforcing .fillet T = thickness of passing member shifted from the position shown on the joint designs herein, as follows: 3.8 For joints with “U“ or “V“ bevels, the centerline
10、 of the included angle may be Included bevel angle Degrees Less than 30 30 up to 60 60 and greater Maximum bevel angle shift Degrees +S Tl0 ho - 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-22D 25 May 1979 Bevel angle shifts are permitte
11、d, provided the specified minimum total included angle is maintained. 3.9 For material 1-1/2 inches thick and over, the joint bevel angles specified by this standard need only be maintained for a minimum thickness of 5/8 inch to provide accessibility for welding the root, after which the included an
12、gle may be reduced to 20 degrees minimum .for the remainder of the material thickness. only the minimum dimension is specified, shall be 1/4 inch above the specified minimum. 3.10 The maximum allowable root opening of backing strap or ring type joints, where I 3.11 Fillet weld sizes or structural jo
13、ints shall be determined in accordance with MIL-Sm-1628. 3.12 Fillet weld sizes or piping system joints are based on the nominal pipe wall thickness (T), and are indicated on the applicable joint designs. 3.13 The minimum throat or fillet joints with equal legs shall not be less than 0.7 tims the sp
14、ecified size. The minimum throat for fillets with unequal legs shall not be less than 0.7 times the specified short leg. 4. JOINT DESIGN SELECTION 4.1 Joint design shall be selected in accordance with the applicable fabrication docu- ment (e.g., MIL-Sm-278, NAVSEA 0900-LP-000-1000, NAVSEA 0900-LP-00
15、6-9010, IUVSEA 0900-LP- 014-5010, etc:). Custodians : Navy - Sn Amy - MR Air Force - 11 Review activities: Navy - YD Army - ER, CR User activities: Navy - MC, OS Preparing activity: Navy - SH (Project THJM-0082) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
16、rom IHS-,-,-MIL-STD-22D 25 May 1979 QH1478B JOINT -W+ PERIIANENT BACKINQ STRAP Plate W min Tlmin Thickness - (T) (inch) (inch) (inch) I Up through 1/8 1 3/16 Over 1/8 through 1/2 1/8 1-1/2 114 Over 5/16 5/16 NOTES : 1. S 1/2T, but in no case less than l/8 inch or greater than 1/4 inch. The welds may
17、 be on either edge of the strap or within the weld groove. 2. Intermittent fillet welds OLT tack welds may be employed unless otherwise 3. When shapes are used in lieu-of backing strap, all above dimensions and 4. Butt joints in permanent backing straps shall be welded, but need not specif ied. note
18、s shall apply. comply with NDT requirements applicable to the welded joint itself. FIGURE 1, Permanent backinq strap. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-22D NOTICE 2 TH m 7777733 OdbSfl77 7 m MIL-STD-22D 25 May 1979 WELDED OME
19、SIDE WELDED BOTH SI DES B I-S. 2 - SEE FIG. I WELDED ON BACK1 NG Joint inch, max inch number Dim T Dim Y BlS.1 O to 1/32 1/ 16 B2S. 1 3/ 16 T min BlS.2 1/ 4 O to T I I I I NOTE: Joints welded from-one side without a backing, shall not be used when root of weld is subject to bending tension stress eq
20、uivalent to one- half the yield strength of the base metal or greater. FIGURE 2. Butt joints, square, BlS.1, B2S.1, BlS.2. Reprinted without change. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-22D 31 January 1984 BIV .1 BIV. 2 BIV .3 BI
21、V.4 (note 2) 1 I1 SEE FIG. I . . y.4 I“ (Note 1) S I HGLE-V BIV 5 BIV .6 BIV. 7 y+ P- S l NGLE BEVEL SH 1498B Angle X Joint -min range where number Dim Y min or indicated (degrees) inch BlV.1 45 3/ 16 B1V.2 BlV.3 1/4 35 3/8 25 BlV.6 1/4 . 45 B1V .5 1/4 O - 25 BlV.4 3/5 20 B1V.7 3/5 35 NOTES : (Note
22、1) Dim T position inches Welding 1 Unlimited All - All All All All Flat, vert, over Flat, vert, over 1. Ceramic or other non-metallic backing may be used subject to prior NAVSEA 2. The use of BIV.4 requires prior NAVSEA approval. approval. FIGURF, 3. Butt joints, welded on backing, BlV.1, BlV.2, BlV
23、.3, BlV.4 “L. BlV.5, BlV.6, BlV.7. 6 Supersedes page 6 of 25 May 1979. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-STD-22D NOTICE 2 TH W 9997911 0065877 O MIL-STD-ZZD 25 May 1919 B2V. I I“ SINGLE-V SINGLE-BEVEL Provided by IHSNot for ResaleN
24、o reproduction or networking permitted without license from IHS-,-,-MIL-STD-22D 25 May 1979 B2V. 3 -DOUBLE-BEVEL FIGURE 5. Butt joints, double-V and double-bevel, B2V.3, B2(S)V.4. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-STD-22D NOTICE
25、2 TH W 979991111 00659011 5 W MIL-STD-ZZD 25 May 1979 B2U. I 62U. 2 B2U. 3 S I HOLE-U 1 Angle X Joint (inch) (degrees) number Dim T min B2U .1 B2U.2 B2J.1 B2J. 2 35 20 3/4 min 12 B2U. 3 3/4 min 3/4 min 25 3/4 min 35 3/4 min Welding Flat,vert,over Flat,vert,over Flat All 9 Provided by IHSNot for Resa
26、leNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-22D NOTICE 2 TH m 77777LL 0065702 7 m MIL-STD-2 2D 25 May 1979 62U. 4 B2U. 5 62J. 3- B24, 4 Joint number Angle X min Dim T (inches) position B2U.4 (degrees) Welding 35 All 1-1/2 min 35 B2J:4 Flat,vert,over 1-1/2 min Flat
27、,vert,over 1-1/2 min 25 20 B2J.3 B2U. 5 All 1-1/2 min FIGURE 7. Butt joints, dorible-u and double-J, B2U.4, B2U.5, B2J.3, B2J.4. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-c MIL-STD-22D NOTICE 2 TH W 99999LL 0065903 7 m MIL-STD-22D 25 May 197
28、9 a90258 WELDED ONE SIDE c2s. I WELDED BOTH SIDES NOTE: Joints welded from one side shall not be used when root of weld is subject to bending tension stress equivalent to one-half the yield strength of the base metal or greater. FIGURE 8. Corner jointe, open square, ClS.1, C2S.1. 11 Provided by IHSN
29、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-STD-22D NOTICE 2 TH W.7777733 00b5704 O W - _ “ . “ “ MIL-STD-22D 25 May 1979 CIV. I (SEE NOTE) 3/16 MIN c2v. I WELDED ONE SIDE SHI 4S5B I“ WAX FILLET REINFORCED NOTE: Joints welded from one side shall not be use
30、d when root of weld is subject to bending tension stress equivalent to one-half the yield strength of the base metal or greater. FIGURE 9. Corner joints, outside single-V, ClV.1, C2V.1. 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-22D N
31、OTICE 2 TH 77797LL ClOb5705 2 m CIV. 2(SEE MOTE 1 WELDED ONE SIDE 3/16. MlH 3H9026A WELDED ONE SIDE MIL-STD-22D 25 Hay 1979 1 MAX 1 MAX NOTE: Joints welded from one side shall not he used when root of weld is subject to bending tension stress equivalent to one-half the yield strength of the base met
32、al or greater. FIGURE 10. Corner joints, outside single-bevel, ClV.2, ClV.3. 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-22D NOTICE 2 TH W 7777733 0065706 4 m MIL-STD-22D 25 May 1979 CpY.2 C2V. 3 FIGURE 11. Corner joints, fillet-reinfo
33、rced, outside single-bevel, c2v.2, c2v.3. 14 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-22D NOTICE 2 TH m 7777733 0065707 6 m MIL-STD-22D 25 May 1979 o“ TO C2V.4 o TO WELDED ONE SIDE I.“MAX I*MAX NOTE: Joints welded from one side shall n
34、ot be used when root of weld is subject to bending tension stress equivalent to one-half the yield strength of the base metal or greater. 15 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-22D NOTICE 2 TH W 77777LL 0065708 8 m _ - MIL-STD-22D
35、 25 May 1979 c2s. 2 S I MOLE; DOUBLE. NOTE: Joints welded from one side shall not be used when root or weld is subject to bending tension stress equivalent to one-half the yield strength of the base metal or greater. FIGURE 13. Corner joints, fillet welded, outside square, ClS.2, C2S.2. 16 Provided
36、by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-b MIL-STD-22D NOTICE 2 TH 97777LL 0065909. T W MIL-STD-22D 25 May 1979 c2v. 5 W C2V.6 r“l FIGURE 14. Corner joints, fillet-reinforced, double-bevel, C2V.5, C2V.6. 17 Provided by IHSNot for ResaleNo reproduction
37、or networking permitted without license from IHS-,-,-MIL-STD-22D 25 May 1979 CIU. I (SEE NOTE? c2u. I I/ Al W WELDED OliE SIDE MIN NOTE: Joints welded from one side shall not be used when root of weld is subject to bending tension stress equivalent to one-half of the yield strength of the base metal
38、 or greater. FIGURE 15. Corner joints, single-U, ClU.1, C2U.1. 18 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-22D 25 May 1979 r, I J. I (SEE NOTG CIJ.2 t SH1 L88B WELDED ONE SIDE c I-J .3 (SEE NOTE) CIJ.4 W XI WELDED ONE SIDE I Joint numb
39、er 1 X min I Dim T 1 Welding Angle (degrees) (inch) position ClJ.1, C1J.3 All 3/4 min 35 ClJ.2, C1J.4 Flat,vert,over 3/4 min 25 NOTE: Joints welded from one side shall not be used when root of weld is subject to bending tension stress equivalent to one-half the yield strength of the base metal or gr
40、eater. FIGURE 16. Corner joints, welded one side, outside sinqle-J, ClJ.1, ClJ.2, ClJ.3, ClJ.4. 19 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-STD-22D NOTICE 2 TH W 77777LL 0065712 T W MIL-STD-22D 25 May 1979 C2J. I C2J. 2 C2J3 C2 5.4 3/ 16
41、“ MIN- 1 /PR MIN W FILLET REINFORCED FILLET REINFORCED I C2J.1, C2J.3 C2J.2, C2J.4 FIGURE 17. Corner joints, fillet-reinforced, welded both sides, outside single-J, C2J.1, CZJ.2, C2J.3, C2J.4. 20 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-ST
42、D-ZZD NOTICE 2 TH m 7777731 0065733 L W c MIL-STD-22D 25 May 1979 civ.5 CIV. 6 CIV.7 ci v. 8 CIV. 9 CIV. 10 OUTSIDE- WELDED ON BACKING CIV. I I CIV. 12 -+ +Y QI1 L87B 3/8MpJ- I JSEE FIG. I :I r- -. r I I S I ,I ,- - T INSIDE-WELDED ON BACKING FILLET REINFORCED ClV.5,ClV.8, Flat ,vert 3/8 25 c1v.7,c1
43、v.10 Unlimited All 3/8 35 ClV.6,ClV.9, All 1/4 45 ClV. 11 ClV.12 I I and ver I NOTE: Backing may be removed and joint welded on both sides. If joint is not welded on both sides, the joint shall not be used when the root of the weld is subject to bending tension stress equivalent to one-half the yiel
44、d strength of the base metal or greater. FIGURE 18. Corner joints, welded me Side, single-bevel, Clv.58 c1v.6, c1V-7, c1v.8, clv.9, c1v.10, c1v.11, crv.12. 21 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-22D 25 nay 1979 V2“R MIN WELDED ONE
45、 SIDE C23.5 O TO 316“ It r 1/16“ to 3/16“ V2“R MIN WELDED BOTH SIDES NOTE$ Joints welded ftan one side shall not be used when root of weld is subject to bending tension stress equivalent to one-half the yield strength of the base metal or greater. FIGURE 19. Corner joints, welded one ride and both a
46、ides, inside single-J, CIJ.br C23 5 22 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-STD-22D NOTICE 2 TH m 99977LL 0065935 5 m MIL-STD-22D 25 May 1979 C2J.6 DOUBLE-J CORNER JOINT FILLET REINFORCED FIGURE 20. Corner joint, fillet-reinforced, double-J, C2J.6. P3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
