subsea - page 3

Flange and HubConnections

Subsea Engineer’s Handbook Section 3

In-Spec Inc. 1999 Flange and Hub Connections

Table of ContentsSection 3

Page

1. API and Cameron Ring Joint Design 1

2. Enviromental Factors Affecting Flange Integrity 9

3. API Flange Connection Data 10

4. Cameron Clamp Data 12

5. Stud Torque Chart 14


In-Spec Inc. 1999 1 Flange and Hub Connections



For flanges and clamped hub connections to reliably contain wellbore pressure theflange faces must remain in contact at all times. If the environmental forces exceed theclamping force of the studs (or the clamp for a clamped connection) a separation of theflange faces will occur with the resulting loss of containment (a leak). Therefore,adequate torque must be applied to the connection to achieve the desired designstrength of the connection. On the other hand, excessive torque applied to a flangestud can cause thread distortion and damage. This will reduce the stud’s strength.Reduced stud strength also translates into premature loss of clamping force and flangeface separation under load. For this reason correct torque must be applied toconnection studs and nuts to achieve maximum connection strength.



API Flange Connection DataStud Size (in)

Size(in)

Working Pressure(psi) Ring Gasket

Flangeto

FlangeStudded Quantity

1 1/16 10,00015,000

BX 150 3/4 x 5 1/43/4 x 5 1/2

3/4 x 3 1/23/4 x 3 1/2

88

1 3/16 10,00015,00020,000

BX1513/4 x 5 1/47/8 x 5 7/81 x 7 3/4

3/4 x 3 ¾7/8 x 4 1/2I x 5 1/4

888

2 1/16 2,0003,0005,00010,00015,00020,000

R 23 (RX 23)R 24 (RX 24)R 24 (RX 24)

BX 152BX 152BX 152

5/8 x 4 3/47/8 x 6

7/8 x 6 1/43/4 x 5 1/27/8 x 6 1/4

1 1/8 x 8 1/2

5/8 x 3 7/87/8 x 4 1/47/8 x 4 1/23/4 x 3 7/87/8 x 4 1/2

1 1/8 x 1 1/4

888888

2 9/16 2,0005,00010,00015,00020,000

R 26 (RX 26)R 27 (RX 27)

BX 153BX 153BX 153

3/4 x 5 1/41 x 7

7/8 x 6 1/41 x 7

1 1/4 x 9 1/2

3/4 x 4 1/81 x 5 1/8

7/8 x 4 1/21 x 5

1 1/4 x 6 3/8

88888

3 1/8 2,0003,0005,00010,00015,00020,000

R 31 (RX 31)R 31 (RX 31)R 35 (RX 35)

BX 154BX 154BX 154

3/4 x 5 1/27/8 x 6 1/41 1/8 x 7 ¾

1 x7 ¼1 1/8 x 8

1 3/8 x 10 ¼

3/4 x 4 3/87/8 x 4 5/81 1/8 x 5 ¾

1 x 5 1/81 1/8 x 5 ½1 3/8 x 6 7/8

888888

4 1/16 2,0003,0005,00010,00015,00020,000

R 37 (RX 37)R 37 (RX 37)R 39 (RX 39)

BX 155BX 155BX 155

7/8 x 6 1/41 1/8 x 7 ½1 3/4 x 8 ½1 1/8 x 8 3/81 7/8 x 9 ½1 3/4 x 12 ¼

7/8 x 51 1/8 x 5 1/21 1/4 x 6 1/81 1/8 x 5 3/41 3/8x6 7/81 3/4 x 8 1/2

888888

5 1/8 3,0005,00010,000

R 41 (RX 41)R 44 (RX 44)

BX169

1 1/4 x 81 1/2 x 10 ¾1 1/8 x 9 ¼

1 1/4 x 5 1/41 3/8 x 7 3/81 1/8 x 5 7/8

8812

6 2,000 R 45 (RX 45) 1 x7 1/2 1 x 5 1/8 12

7 1/16 2,0003,0005,00010,00015,00020,000

R 45 (RX 45)R 45 (RX 45)R 46 (RX 46)

BX 156BX 156BX 156

1 x 7 1/21 1/8 x 8 ½1 7/8 x 11 ¼1 1/2 x 11 ¾

1 1/2 x 132 x 18

1 x 5 1/81 1/8 x 5 7/81 7/8 x 7 1/21 1/2 x 7 3/41 1/2 x 8 5/8

2 x 11 1/2

121212121216

9 2,0003,0005,00010,00015,000

R 49 (RX 49)R 49 (RX 49)R 50 (RX 50)

BX 157BX 157

1 1/8 x 8 ½1 3/8 x 9 ½1 5/8 x 12 ½1 1/2 x 13 ¼1 7/8 x 16 ¼

1 1/8 x 61 1/2 x 6 7/81 5/8 x 8 1/21 1/2 x 8 5/81 7/8 x 11 1/8

1212121616



Stud Size (in)

Size(in)

Working Pressure(psi) Ring Gasket

Flangeto

FlangeStudded Quantity

11 2,0003,0005,00010,00015,00020,000

R 53 (RX 53)R 53 (RX 53)R 54 (RX 54)

BX 158BX 158BX 158

1 ¼ x 9 ¼1 3/8 x 10

1 7/8 x 14 ½1 3/4 x 15 3/8

2 x 19 3/42 3/4 x 24

1 ¼ x 6 ½1 3/8 x 6 7/81 7/8 x 9 5/81 3/4 x 9 7/82 x 12 1/8

2 3/4 x 14 ¾

161612162016

13 5/8 2,0003,0005,00010,00015,00020,000

R 57 (RX 57)R 57 (RX 57)

BX 160BX 159BX 159BX 159

1 1/4 x 9 ½1 3/8 x 10 ¾1 5/8 x 12 ¾1 7/8 x 17 ¾

2 1/4 x 213 x 30

1 1/4 x 6 5/81 7/8 x 7 3/81 5/8 x 8 ½1 7/8x1I 1/8

2 1/4 x 13 1/83 x 17 ¾

202016202020

16 ¾ 2,0003,0005,00010,000

R 65 (RX 65)R 66 (RX 66)

BX 162BX 162

1 1/2 x 10 3/41 5/8 x 12 1/41 7/8 x 14 ¾1 7/8 x 17 ¾

1 1/2 x 7 5/81 5/8 x 8 3/81 7/8 x 9 5/81 7/8 x 11 1/8

20201620

18 ¾ 5,00010,00015,000

BX 163BX 164BX 164

2 x 182 ¼ x 22 7/8

3 x 27

2 x 11 5/82 1/4 x 14 3/8

3 x 16 1/4

202420

20 ¾ 3,000 R 74 (RX 74) 2 x 15 ¼ 2 x 10 ¼ 20

21 ¼ 2,0005,00010,000

R 73 (RX 73)BX 165BX 166

1 5/8 x 12 ½2 x 18 3/8

2 ½ x 24 5/8

1 5/8 x 8 1/22 x 12 1/8

2 1/2 x 15 5/8

242424

26 ¾ 2,0003,000

BX 167BX 168

1 ¾ x 14 ½2 x I7 3/4

1 ¾ x 9 1/82 x 11

2024



Cameron Clamp DataTorque Required in Foot

Pounds (ft-lb) and NewtonMeters (N-m)

ClampNo.

Hub BoreSize (in.)

ClampWorkingPressure

(psi)

ClampAssemblyPart No. (2)

AcrossFlats(in)

BoltDiameter

(in)

WrenchPart No.

API-5A Lube Moly-Lube

1 1-13/162-1/16

10,0005,000

615236-01 1 7/16 7/8 7959-01 135 ft-lb183 N-m

90 ft-lb 122N-m

2 1-13/162-1/162-9/16

15,00010,0005,000

615236-02 1 7/16 7/8 7959-01270 ft-lb366 N-m

180 ft-lb244 N-m

3 1-13/162-1/162-1/162-9/16

20,00015,00020,0005,000

615236-03 1 5/8 1 7959-02 400 ft-lb542 N-m

275 ft-lb373 N-m

4 2-9/163-1/8

10,00015,000

615236-04 1 5/8 1 7959-02 400 ft-lb542 N-m

275 ft-lb373 N-m

5 3-1/84-1/16

10,0005,000

615236-05 1 5/8 1 7959-02 400 ft-lb542 N-m

275 ft-lb373 N-m

6 2-9/163-1/84-/16

20,00015,00010,000

615236-06 1 13/16 1 1/8 7959-03600 ft-lb813 N-m

400 ft-lb542 N-m

7 7-1/16 5,000 615236-07 2 3/16 1 3 /8 7959-05 1100 ft-lb1491 N-m

700 ft-lb949 N-m

8 3-1/84-1/167-1/167-1/16

9

20,00015,0005,00010,0005,000

615236-08 2 3/8 1 1/2 7959-061450 ft-lb1965 N-m

950 ft-lb1287 N-m

9 11 3,000 615236-09 2 3/16 1 3 /8 7959-05 1100 ft-lb1491 N-m

700 ft-lb949 N-m

10 4-1/16 20,000 615236-10 2 9/16 1 5/8 7959-07 1850 ft-lb2507 N-m

1200 ft-lb1626 N-m

11 7-1/167-1/16

99

13-5/8

10,00015,00010,0005,0003,000

615236-11 2 3/16 1 3/8 7959-051100 ft-lb1491 N-m

700 ft-lb949 N-m

12 16-3/4 2,000 615236-12 2 3/16 1 3 /8 7959-05 1100 ft-lb1491 N-m

700 ft-lb949 N-m

13 13-5/8 5,000 615236-13 3 1/2 2 1/4 7959-13 5000 ft-lb6775 N-m

3200 ft-lb4336 N-m

14 16-3/4 3,000 615236-14 2 9/16 1 5/8 7959-07 1850 ft-lb2507 N-m

1200 ft-lb1626 N-m



Torque Required in FootPounds (ft-lb) and Newton

Meters (N-m)

ClampNo.

Hub BoreSize (in.)

ClampWorkingPressure

(psi)

ClampAssemblyPart No. (2)

AcrossFlats(in)

BoltDiameter

(in)

WrenchPart No.

API-5A Lube Moly-Lube

15 7-1/1611

13 5/8

20,00015,00010,000

615236-15 3 7/8 2 1/2 7959-147000 ft-lb9485 N-m

4400 ft-lb5962 N-m

16 20-3/421 1/4

2,0002,000

615236-16 2 9/16 1 5/8 7959-07 1850 ft-lb2507 N-m

1200 ft-lb1626 N-m

17 20-3/4 3,000 615236-17 3 1/2 2 1/4 7959-13 4000 ft-lb5420 N-m

2600 ft-lb3469 N-m

18 20-3/420-3/421-1/4

2,0003,0002,000

615236-18 3 1/2 2 1/4 7959-135000 ft-lb6775 N-m

3200 ft-lb4336 N-m

19 16-3/4 5,000 615236-19 3 7/8 2 1/2 7959-14 7000 ft-lb9485 N-m

4400 ft-lb5962 N-m

20 30-1/2 1,000 615236-20 2 3/8 1 1/2 7959-06 1450 ft-lb1965 N-m

950 ft-lb1287 N-m

21 24-1/4 1,000 615236-21 2 1 1/4 7959-04 800 ft-lb1084 N-m

550 ft-lb745 N-m

22 7-1/1611

15,00010,000

615236-22 3 1/2 2 1/4 7959-13 5000 ft-lb6775 N-m

3200 ft-lb4336 N-m

23 36 1,000 615236-23 3 1/2 2 1/4 7959-13 5000 ft-lb6775 N-m

3200 ft-lb4336 N-m

24 34 1,000 615236-24 2 9/16 1 5/8 7959-07 1850 ft-lb2507 N-m

1200 ft-lb1626 N-m

25 7 1/16 2,000 615236-25 1 7/16 7/8 7959-01 270 ft-lb366 N-m

180 ft-lb244 N-m

26 18-3/421-1/421-1/4

15,0007,50010,000

615236-26 5 428500 ft-lb38618 N-m

17900 ft-lb24255 N-m

27 18-3/421-1/4

10,0005,000

615236-27 5 3 1/4 15200 ft-lb20596 N-m

9600 ft-lb13008 N-m

28 1113-5/816-3/4

20,00015,00010,000

615236-28 4 5/8 312000 ft-lb16260 N-m

7600 ft-lb10298 N-m

NOTES :

(1) The 4 bolt clamp style only is considered in this bulletin. The 2 bolt clamp is not API which is notmeant to infer that it is an inadequate design.

(2) This is a Cooper (Cameron Iron) part number.

(3) Moly paste means a lubricant with 70% molybdenum disulfide similar to TS-70, NSW #503 orFEL-PRO #670. The coefficient of friction is 0.07.



Torque for Specified Lubricants *(ft-lbs)

BoltSize(in)

MinimumYield

Strength(psi)

BoltTension

(lbs)

NSW503

F=0.060

NSW504

F=0.085

NSW505

f=0.100

NSW506

f=0.110

NSW507

f=0.100

API 5A2f=0.117

MachineOil

f=0.150

Dry Steelon Steelf=0.400

3/4 105000 17754 104 137 157 171 157 180 224 559

7/8 105000 24495 165 218 250 272 250 287 358 893

1 105000 32129 245 325 373 405 373 427 533 13321-1/8 105000 41873 351 468 538 585 538 618 772 19941-1/4 105000 52905 483 647 746 811 746 858 1075 27201-3/8 105000 65226 644 867 1000 1090 1000 1152 1447 36781-1/2 105000 78835 837 1131 1307 1425 1307 1507 1896 48371-5/8 105000 93733 1071 1453 1682 1834 1682 1941 2445 62601-3/4 105000 109920 1338 1820 2109 2301 2109 2436 3072 78881-7/8 105000 127395 1646 2244 2602 2841 2602 3009 3798 9775

2 105000 146158 1997 2729 3167 3460 3167 3665 4630 119422-1/8 105000 166210 2395 3279 3809 4162 3809 4409 5575 144082-1/4 105000 187551 2843 3898 4531 4953 4531 5248 6641 171912-3/8 105000 210180 3343 4590 5339 5838 5339 6187 7834 203102-1/2 105000 234098 3898 5360 6238 6823 6238 7232 9162 237862-3/4 95000 258580 4691 6467 7533 8244 7533 8741 11085 28846

3 95000 310020 6087 8410 9803 10732 9803 11382 14447 376703-1/4 95000 366124 7735 10705 12488 13676 12488 14507 18428 481293-1/2 95000 426891 9656 13385 15622 17113 15622 18157 23079 603653-3/4 95000 492321 11871 16477 19241 21084 19241 22373 28453 74516

4 95000 562415 14401 20012 23379 25624 23379 27195 34603 907204-1/4 75000 503030 13631 18963 22162 24295 22162 25788 32826 861464-1/2 75000 565731 16174 22523 26332 28871 26332 30649 39029 1025134-3/4 75000 632112 19015 26502 30994 33988 30994 36084 45967 120831

5 75000 702176 22171 30924 36176 39677 36176 42128 53681 1412105-1/4 75000 775920 25657 35812 41905 45967 41905 48810 62214 1637615-1/2 75000 853347 29491 41190 48209 52889 48209 56164 71606 1885925-3/4 75000 934455 33689 47081 55116 60472 55116 64222 81899 215815

6 75000 1019244 38267 53508 62652 68748 62652 73015 93133 245538

* Chart of torque values iIn English units for ASTM A193 Grade B7 with stud stress equal to 50% ofminimum yield strength

Equivalents:

NSW 503- Molybdenum Disulfide based, functional equivalents C670, MolyKote G PasteNSW 504- Molybdenum Lead Oxide and Graphite based, functional equivalent C100NSW 505- Copper and Graphite based, functional equivalent N 1000NSW 506- Nickel and Graphite based, functional equivalents, Nickel ease, N5000, Never Seez Nickel

SpecialNSW 507- Copper and Graphite based, functional equivalent C5A, Never Seez

subsea - page 3

Documents