ST-L

TM
TM

Flush Joint Connection

© Grant Prideco December 2000. All rights reserved.

 A T L A S B R A D F O R D

ST-L Flush Joint Connection

TM

Service Recommendation
• The ST-L and HD-L connections incorporate a hooked
thread design. This provides maximum structural
depend-ability for a flush OD connection. Both ST-L
and HD-L connections have metal-to-metal internal and
external pressure seals. This provides maximum pres-
sure integrity and seal dependability. The Atlas Bradford
ST-L and HD-L connections are, therefore, both recom-
mended for drilling and production applications where
maximum clearance is required. HD-L connection has a
higher compression rating than ST-L connection and
should be used when severe compression or bending
load resistance is required.

True Flush OD
• The ST-L connection has a true flush OD for maxi-
mum clearance.

15° Reverse Angle Torque Shoulder

• Provides protection against damage if overtorqued.
• Axial force generated by makeup torque energizes the
external metal seal.

External Metal Seal

• Seal is generated by radial interference, reducing the
effects of tensile load and back off.
• Capable of resisting API pipe body collapse pressure.
• Seal mechanism energized by external pressure.
• Seal integrity not affected by multiple trips.

Tapered Interference Thread

• Balanced design matches strength of pin and box.
• Tensile efficiency optimized.
• Thread body interference distributes thread loads more
evenly.
• Torque stored in thread body increases torque capacity
and helps prevent back off.

© Grant Prideco December 2000. All rights reserved. 29

 TM
ST-L Flush Joint Connection

Hooked Premium Thread Form

• 45° stab and compression load flank stabs easily,
reduces cross threading.
• Negative 9° load flank prevents the possibility of
thread jump-out and insures predictable tensile
performance.
• Precision axial tolerances allow the thread body to
support compressive as well as tensile loads.

Two-Start Thread
• Twin lead makes up faster.
• Rubbing of the seal surfaces minimized, improving the
resistance to galling during makeup.

Optional TEFLON® Seal Ring

• The ST-L connection fully rated without the seal ring.
• Offered for those desiring a seal ring.

Internal Metal Seal

• Seal is generated by radial interference, reducing the
effects of tensile load.
• Capable of resisting API pipe body internal pressure.
• Seal mechanism energized by internal pressure.
• Seal integrity not affected by multiple trips.

Swaged and Bored Pin I.D.

• Guarantees a uniform and concentric radial seal area
which is required to insure the primary seal integrity.
• Bore diameter exceeds API standard drift diameter or
alternate drift diameter per on applicable sizes and
weights.

30 © Grant Prideco December 2000. All rights reserved.

P R E M I U M C O N N E C T I O N S
 A T L A S B R A D F O R D

TM
ST-L Connection Torque Data

Size Plain End J-55/K-55 L-80/Q-125 Size Plain End J-55/K-55 L-80/Q-125
OD Weight Minimum Maximum Minimum Maximum OD Weight Minimum Maximum Minimum Maximum
in. lbs/ft ft-lbs ft-lbs ft-lbs ft-lbs in. lbs/ft ft-lbs ft-lbs ft-lbs ft-lbs
2-3/8 4.43 400 600 500 700 7 34.58 4500 5900 5800 7400
5.75 600 800 800 1000 37.26 5000 6400 6300 8100
40.39 5400 7000 6900 8900
2-7/8 6.16 600 800 800 1000
43.47 5400 7000 6900 8900
7.66 800 1000 1000 1400
45.30 5700 7300 7200 9200
8.44 1000 1200 1100 1500
48.88 6500 8300 8200 10600
3-1/2 7.70 1050 1350 1400 1800 49.50 6500 8300 8200 10600
8.81 1050 1350 1400 1800
7-5/8 23.47 2600 3400 3300 4300
9.91 1050 1350 1400 1800
25.56 2900 3700 3700 4800
12.52 1600 2000 2000 2600
29.04 3700 4700 4600 6000
15.37 2000 2600 2500 3300
33.04 4300 5500 5400 7000
4 9.11 1000 1200 1200 1600 38.05 4900 6300 6200 8000
10.46 1150 1450 1400 1800 44.67 6000 7800 7600 9800
11.34 1200 1600 1600 2000 46.73 6300 8100 8000 10300
12.93 1450 1900 1800 2400 50.91 5900 7600 7500 9700
4-1/2 9.40 900 1100 1100 1500 52.57 6000 7800 7700 9900
10.23 950 1250 1200 1600 7-3/4 45.47 6100 7900 7800 10000
10.79 1150 1450 1400 1800 8-5/8 23.57 2400 3200 3100 4100
11.35 1150 1450 1500 1900 27.02 3000 3800 3800 4800
12.24 1300 1700 1700 2100 31.10 3600 4600 4500 5900
13.04 1400 1800 1800 2400 35.14 4500 5700 5700 7300
14.98 1700 2100 2200 2800 39.29 5100 6500 6500 8300
5 12.83 1400 1600 1800 2200 43.39 4900 6300 6200 8000
14.87 1700 2100 2100 2700 49.00 4900 6300 6200 8000
17.93 2100 2700 2700 3500 9-5/8 36.00 4000 5200 5200 6800
20.01 2500 3300 3200 4200 38.94 4500 5700 5700 7300
20.63 2500 3300 3200 4200 42.69 5600 7200 7100 9100
23.08 3000 3800 3800 4900 46.14 5300 8100 8000 10200
24.03 2700 3500 3400 4400 52.85 7100 9100 8900 11500
5-1/2 13.70 1400 1800 1800 2200 57.38 7200 9200 9100 11700
15.35 1500 1900 2200 2800 9-7/8 61.74 8400 10800 10700 13800
16.87 1750 2250 2400 3200
19.81 1900 2500 2900 3700 10-3/4 38.88 4500 5700 5700 7300
22.54 2200 3000 3700 4700 44.22 5100 6500 6500 8300
25.54 3300 4300 4200 5400 49.50 6600 8400 8200 10600
26.80 3300 4300 4200 5400 54.21 6300 8100 8000 10200
28.13 3500 4800 4000 5200 59.40 6900 8900 8700 11200
29.64 3150 4050 4200 5400 64.53 7400 9600 9400 12100
31.95 3500 4500 4500 5700 11-3/4 58.81 6800 8800 8600 11000
63.97 7300 9300 9200 11800
6-5/8 19.49 2100 2700 2700 3500
69.42 8100 10350 10100 13000
23.58 2700 3500 3400 4400
73.47 8500 10900 10700 13800
27.65 3500 4800 4500 5900
31.20 4100 5300 5200 6600 11-7/8 70.19 8100 10400 10100 13000
7 16.70 1700 2100 2200 2800 13-3/8 59.45 6900 8900 8700 11200
19.54 2100 2700 2600 3400 66.10 7600 9800 9700 12500
22.63 2500 3300 3200 4200 70.60 9500 12300 10900 13800
25.66 3300 4200 4200 5400 75.33 8800 11200 11000 14200
28.72 3700 4700 4700 6100 82.90 9600 12400 12200 15600
31.67 4100 5300 5200 6800 13-5/8 86.78 11900 15300 15100 19500

ST-L Connection Data Table Notes:

1. ST-L connection pressure ratings are equal to the API pipe body rating for minimum internal yield and collapse.
2. For application with bending both tensile and compressive joint strength must be evaluated. Contact Grant Prideco for application
information. Bending efficiency is equal to the lower of the tensile or compressive efficiency.
3. Joint efficiency is calculated by dividing the connection critical area by the pipe body area.
4. ST-L connection tensile joint strength is calculated by multiplying the critical area times the material yield strength.
5. ST-L connection compressive joint strength is equal to 60% of the tensile joint strength.
6. ST-L connection reference minimum parting load is the ultimate strength or parting load of the connection. These values are offered for refer-
ence only. The connection should never be subjected to loads in excess of the joint strength. Tubular designs should incorporate an appropriate
design factor.
7. Reference string length is calculated by dividing the joint strength by both the plain end weight and air and a 1.4 design factor. These values are
given for reference only and do not include other load factors such as bending, buoyancy, temperature, load dynamics, combined loads, etc.
8. ST-L connection designs are optimized for each size and weight and are, therefore, not interchangeable.
9. High Collapse-95 is not an API grade. An ultimate tensile strength of 105,000 psi was used for calculations in this table. This value is typical of
the industry, but may vary from mill to mill. 31
10. Performance ratings are based on typical pipe body dimensions

© Grant Prideco December 2000. All rights reserved.

 TM
ST-L Casing and Tubing Connection Data

Pipe Data Connection Data Load Data

J-55 K-55 L-80
Nominal Reference Reference Reference Reference Reference Reference
Plain API Pipe Pin Tensile String Minimum Tensile String Minimum Tensile String Minimum
Size Nominal End Wall Nominal Drift Body Bored Makeup Critical Joint Joint Length Parting Joint Length Parting Joint Length Parting
OD Weight Weight Thick ID Diameter Area ID Loss Area Efficiency Strength DF = 1.4 Load Strength DF = 1.4 Load Strength DF = 1.4 Load
in lbs/ft lbs/ft in. in. in. sq in. in. in. sq in. % 1000 lbs ft 1000 lbs 1000 lbs ft 1000 lbs 1000 lbs ft 1000 lbs
2-3/8 4.70 4.43 0.190 1.995 1.901 1.304 1.920 2.02 0.575 44.1 32 5160 43 32 5160 55 46 7420 55
5.95 5.75 0.254 1.867 1.773 1.692 1.789 3.10 0.903 53.4 50 6210 68 50 6210 86 72 8940 86
2-7/8 6.50 6.16 0.217 2.441 2.347 1.812 2.377 2.54 0.892 49.2 49 5680 67 49 5680 85 71 8230 85
7.90 7.66 0.276 2.323 2.229 2.254 2.247 3.47 1.243 55.2 68 6340 93 68 6340 118 99 9230 118
8.70 8.44 0.308 2.259 2.165 2.484 2.196 3.87 1.407 56.6 77 6520 106 77 6520 134 113 9560 134
3-1/2 7.70 7.58 0.216 3.068 2.943 2.228 2.968 2.75 1.144 51.3 63 5930 86 63 5930 109 92 8630 109
9.30 8.81 0.254 2.992 2.867 2.590 2.972 3.00 1.295 50.0 71 5760 97 71 5760 123 104 8430 123
10.30 9.91 0.289 2.922 2.797 2.915 2.845 3.74 1.643 56.4 90 6490 123 90 6490 156 131 9440 156
12.95 12.52 0.375 2.750 2.625 3.682 2.652 4.31 2.381 64.7 131 7470 179 131 7470 226 190 10840 226
15.80 15.37 0.476 2.548 2.423 4.522 2.489 5.34 3.016 66.7 166 7710 226 166 7710 287 241 11200 287
4 9.50 9.11 0.226 3.548 3.423 2.680 3.468 2.50 1.259 47.0 69 5410 94 69 5410 120 101 7920 120
11.00 10.46 0.262 3.478 3.351 3.077 3.387 3.42 1.696 55.1 93 6350 127 93 6350 161 136 9290 161
11.60 11.34 0.286 3.428 3.303 3.337 3.347 3.75 1.885 56.6 104 6550 141 104 6550 167 151 9510 179
13.40 12.93 0.330 3.340 3.215 3.805 3.274 4.34 2.223 58.4 122 6740 167 122 6740 191 178 9830 211
4-1/2 9.50 9.40 0.205 4.090 3.965 2.766 4.010 2.46 1.345 48.6 74 5620 101 74 5620 128 108 8210 128
10.50 10.23 0.224 4.052 3.927 3.009 3.952 2.63 1.460 48.5 80 5590 110 80 5590 139 117 8170 139
11.00 10.79 0.237 4.026 3.901 3.174 3.944 3.09 1.698 53.5 93 6160 127 93 6160 161 136 9000 161
11.60 11.35 0.250 4.000 3.875 3.338 3.930 2.87 1.762 52.8 97 6100 132 97 6100 167 141 8870 167
12.75 12.24 0.271 3.958 3.833 3.600 3.886 3.57 2.011 55.9 111 6480 151 111 6480 191 161 9400 191
13.50 13.04 0.290 3.920 3.795 3.836 3.854 3.83 2.181 56.9 120 6570 164 120 6570 207 174 9530 207
15.10 14.98 0.337 3.826 3.701 4.407 3.776 4.47 2.596 58.9 143 6820 195 143 6820 247 208 9920 247
5 13.00 12.83 0.253 4.494 4.369 3.773 4.421 3.25 2.054 54.4 113 6290 154 113 6290 195 164 9130 195
15.00 14.87 0.296 4.408 4.283 4.374 4.335 3.86 2.494 57.0 137 6580 187 137 6580 237 200 9610 237
18.00 17.93 0.362 4.276 4.151 5.275 4.206 3.16 3.103 58.8 170 6770 232 170 6770 294 248 9880 294
20.30 20.01 0.408 4.184 4.059 5.886 4.104 4.75 3.892 66.1 214 7640 292 214 7640 370 311 11100 370
20.80 20.63 0.422 4.156 4.031 6.069 4.081 4.00 3.729 61.4 205 7100 280 205 7100 354 298 10320 354
23.20 23.08 0.478 4.044 3.919 6.791 3.975 5.52 4.588 67.6 252 7800 344 252 7800 436 367 11360 436
24.20 24.03 0.500 4.000 3.875 7.069 4.044 3.57 4.071 57.6 224 6660 305 224 6660 387 326 9690 387
5-1/2 14.00 13.70 0.244 5.012 4.887 4.029 4.941 3.05 2.154 53.5 118 6150 162 118 6150 205 172 8970 205
15.50 15.35 0.275 4.950 4.825 4.514 4.890 3.00 2.226 49.3 122 5680 167 122 5680 211 178 8280 211
17.00 16.87 0.304 4.892 4.767 4.962 4.822 3.62 2.786 56.1 153 6490 209 153 6490 265 223 9440 265
20.00 19.81 0.361 4.778 4.653 5.828 4.708 4.64 3.438 59.0 189 6810 258 189 6810 327 275 9920 327
23.00 22.54 0.415 4.670 4.545 6.630 4.600 4.20 4.237 63.9 233 7390 318 233 7390 403 339 10740 403
26.80 26.70 0.500 4.468 4.375 7.854 4.468 5.44 4.979 63.4 274 7330 373 274 7330 473 398 10660 473
26.00 25.54 0.476 4.548 4.423 7.513 4.492 5.44 5.037 67.0 277 7750 378 277 7750 479 403 11270 479
28.40 28.13 0.530 4.440 4.315 8.275 4.501 3.76 4.805 58.1 264 6700 360 264 6700 456 384 9750 456
29.70 29.64 0.562 4.376 4.251 8.718 4.456 3.96 5.096 58.5 280 6750 382 280 6750 484 408 9830 484
32.00 31.95 0.612 4.276 4.151 9.398 4.406 4.16 5.397 57.4 297 6640 405 297 6640 513 432 9660 513
6-5/8 20.00 19.49 0.288 6.049 5.924 5.734 5.987 3.82 3.267 57.0 180 6600 245 180 6600 310 261 9570 310
24.00 23.58 0.352 5.921 5.796 6.937 5.866 4.74 4.150 59.8 228 6910 311 228 6910 394 332 10060 394
28.00 27.65 0.417 5.791 5.666 8.133 5.711 4.95 5.437 66.9 299 7720 408 299 7720 517 435 11240 517
32.00 31.20 0.475 5.675 5.550 9.177 5.610 5.61 6.250 68.1 344 7880 469 344 7880 594 500 11450 594
7 17.00 16.70 0.231 6.538 6.413 4.912 6.466 2.90 2.585 52.6 142 6070 194 142 6070 246 207 8850 246
20.00 19.54 0.272 6.456 6.331 5.749 6.394 3.50 3.204 55.7 176 6430 240 176 6430 304 256 9360 304
23.00 22.63 0.317 6.366 6.250 6.655 6.304 4.16 3.871 58.2 213 6720 290 213 6720 368 310 9780 368
26.00 25.66 0.362 6.276 6.151 7.549 6.211 3.62 4.729 62.7 260 7240 355 260 7240 499 378 10530 449
29.00 28.72 0.408 6.184 6.059 8.449 6.189 4.09 5.403 63.9 297 7390 405 297 7390 513 432 10740 513
32.00 31.67 0.453 6.094 6.000 9.317 6.026 5.28 6.245 67.0 343 7740 468 343 7740 593 500 11280 593
35.00 34.58 0.498 6.004 5.879 10.172 5.945 5.79 6.911 67.9 380 7850 518 380 7850 657 553 11420 657

See page 31 for data table notes.

32 © Grant Prideco December 2000. All rights reserved.

P R E M I U M C O N N E C T I O N S
 A T L A S B R A D F O R D

TM
ST-L Casing and Tubing Connection Data

Load Data
N-80 C-90 C-95/T-95 High Collapse-95 P-110 Q-125
Reference Reference Reference Reference Reference Reference Reference Reference Reference Reference Reference Reference
Tensile String Minimum Tensile String Minimum Tensile String Minimum Tensile String Minimum Tensile String Minimum Tensile String Minimum
Joint Length Parting Joint Length Parting Joint Length Parting Joint Length Parting Joint Length Parting Joint Length Parting Size
Strength DF = 1.4 Load Strength DF = 1.4 Load Strength DF = 1.4 Load Strength DF = 1.4 Load Strength DF = 1.4 Load Strength DF = 1.4 Load OD
1000 lbs ft 1000 lbs 1000 lbs ft 1000 lbs 1000 lbs ft 1000 ft 1000 lbs ft 1000 lbs 1000 lbs ft 1000 lbs 1000 lbs ft 1000 lbs in.
46 7420 58 52 8380 58 55 8870 60 55 8870 63 63 10160 72 72 11610 78 2-3/8
72 8940 90 81 10060 90 86 10680 95 86 10680 99 99 12300 113 113 14040 122
71 8230 89 80 9280 89 85 9860 94 85 9860 98 98 11360 112 112 12990 120 2-7/8
99 9230 124 112 10440 124 118 11000 131 118 11000 137 137 12780 155 155 14450 168
113 9560 141 127 10750 141 134 11340 148 134 11340 155 155 13120 176 176 14900 190
92 8630 114 103 9710 114 109 10250 120 109 10250 126 126 11860 143 143 13480 154
104 8430 130 117 9490 130 123 9970 136 123 9970 142 142 11510 162 162 13130 175 3-1/2
131 9440 164 148 10670 164 156 11240 173 156 11240 181 181 13050 205 205 14780 222
190 10840 238 214 12210 238 226 12890 250 226 12890 262 262 14950 298 298 17000 321
241 11200 302 271 12590 302 287 13340 317 287 13340 332 332 15430 377 377 17520 407
101 7920 126 113 8860 126 120 9410 132 120 9410 138 138 10820 157 157 12310 170 4
136 9290 170 153 10450 170 161 10990 178 161 10990 187 187 12770 212 212 14480 229
151 9510 189 170 10710 189 179 11270 198 179 11270 207 207 13040 236 236 14870 254
178 9830 222 200 11050 222 211 11660 233 211 11660 245 245 13530 278 278 15360 300
108 8210 135 121 9190 135 128 9730 141 128 9730 148 148 11250 168 168 12770 182 4-1/2
117 8170 146 131 9150 146 139 9710 153 139 9710 161 161 11240 183 183 12780 197
136 9000 170 153 10130 170 161 10660 178 161 10660 187 187 12380 212 212 14030 229
141 8870 176 159 10010 176 167 10510 185 167 10510 194 194 12210 220 220 13850 238
161 9400 201 181 10560 201 191 11150 211 191 11150 221 221 12900 251 251 14650 271
174 9530 218 196 10740 218 207 11340 229 207 11340 240 240 13150 273 273 14950 294
208 9920 260 234 11160 260 247 11780 273 247 11780 286 286 13640 325 325 15500 350
164 9130 205 185 10300 205 195 10860 216 195 10860 226 226 12580 257 257 14310 277 5
200 9610 249 224 10760 249 237 11380 262 237 11380 274 274 13160 312 312 14990 337
248 9880 310 279 11110 307 295 11750 325 295 11750 341 341 13580 387 387 15410 418
311 11100 389 350 12490 389 370 13210 409 370 13210 428 428 15280 487 487 17380 525
298 10320 373 336 11630 373 354 12260 392 354 12260 410 410 14200 466 466 16130 503
367 11360 459 413 12780 459 436 13490 482 436 13490 505 505 15630 574 574 17760 619
326 9690 407 366 10880 407 387 11500 427 387 11500 448 448 13320 509 509 15130 550
172 8970 215 194 10110 215 205 10690 226 205 10690 237 237 12360 269 269 14030 291 5-1/2
178 8280 223 200 9310 223 211 9820 234 211 9820 245 245 11400 278 278 12940 301
223 10030 279 251 10620 279 265 11210 293 265 11210 306 306 12980 348 348 14750 376
275 9920 344 309 11140 344 327 11790 361 327 11790 378 378 13630 430 430 15500 464
339 11410 424 381 12080 424 403 12760 445 403 12760 466 466 14770 530 530 16780 572
398 10660 498 448 11990 498 473 12650 523 473 12650 548 548 14650 622 622 16650 672
403 11270 504 453 12670 504 479 13400 529 479 13400 554 554 15490 630 630 17620 680
384 9750 481 432 10970 481 456 11580 505 456 11580 529 529 13430 601 601 15260 649
408 9830 510 459 11060 510 484 11660 535 484 11660 561 561 13520 637 637 15350 688
432 9660 540 486 10870 540 513 11470 567 513 11470 594 594 13280 675 675 15090 729
261 9570 327 294 10770 327 310 11360 343 310 11360 359 359 13160 408 408 14950 441 6-5/8
332 10060 415 374 11330 415 394 11940 436 394 11940 457 457 13840 519 519 15720 560
435 11240 544 489 12630 544 517 13360 571 517 13360 598 598 15450 680 680 17570 734
500 11450 625 563 12890 625 594 13600 656 594 13600 688 688 15750 781 781 17880 844
207 8850 259 233 9970 259 246 10520 271 246 10520 284 284 12150 323 323 13820 349 7
256 9360 320 288 10530 320 304 11110 336 304 11110 352 352 12870 401 401 14660 433
310 9780 387 348 10980 387 368 11620 406 368 11620 426 426 13450 484 484 15280 523
378 11190 473 426 11850 473 449 12510 497 449 12510 520 520 14480 591 591 16460 638
432 10740 540 486 12090 540 513 12760 567 513 12760 594 594 14770 675 675 16790 729
500 11280 625 562 12680 625 593 13370 656 593 13370 687 687 15490 781 781 17610 843
553 11420 691 622 12850 691 657 13570 726 657 13570 760 760 15700 864 864 17850 933

See page 31 for data table notes.

© Grant Prideco December 2000. All rights reserved. 33

 TM
ST-L Casing and Tubing Connection Data

Pipe Data Connection Data Load Data

J-55 K-55 L-80
Nominal Reference Reference Reference Reference Reference Reference
Plain API Pipe Pin Tensile String Minimum Tensile String Minimum Tensile String Minimum
Size Nominal End Wall Nominal Drift Body Bored Makeup Critical Joint Joint Length Parting Joint Length Parting Joint Length Parting
OD Weight Weight Thick ID Diameter Area ID Loss Area Efficiency Strength DF = 1.4 Load Strength DF = 1.4 Load Strength DF = 1.4 Load
in lbs/ft lbs/ft in. in. in. sq in. in. in. sq in. % 1000 lbs ft 1000 lbs 1000 lbs ft 1000 lbs 1000 lbs ft 1000 lbs
7 38.00 37.26 0.540 5.920 5.795 10.959 5.850 6.27 7.520 68.6 414 7940 564 414 7940 714 602 11540 714
41.00 40.39 0.590 5.820 5.695 11.881 5.750 6.68 8.057 67.8 443 7830 604 443 7830 644 644 11390 765
44.00 43.47 0.640 5.720 5.595 12.788 5.747 4.44 8.312 65.0 457 7510 623 457 7510 790 665 10930 790
46.40 45.30 0.670 5.660 5.535 13.324 5.707 4.81 8.609 64.6 473 7460 646 473 7460 818 689 10860 818
49.50 48.88 0.730 5.540 5.415 14.379 5.540 7.25 9.810 68.2 540 7890 736 540 7880 932 785 11470 932
7-5/8 24.00 23.47 0.300 7.025 6.900 6.904 6.955 2.89 3.964 57.4 218 6630 297 218 6630 377 317 9650 377
26.40 25.56 0.328 6.969 6.844 7.519 6.889 4.29 4.373 58.2 241 6730 328 241 6730 415 350 9780 415
29.70 29.04 0.375 6.875 6.750 8.541 6.782 4.39 5.550 65.0 305 7500 416 305 7500 527 444 10920 527
33.70 33.04 0.430 6.765 6.640 9.720 6.686 5.03 6.489 66.8 357 7720 487 357 7720 616 519 11220 616
39.00 38.05 0.500 6.625 6.500 11.192 6.565 4.84 7.135 63.8 392 7360 535 392 7360 678 571 10720 678
42.80 42.39 0.562 6.501 6.376 12.470 6.453 6.60 8.668 69.5 477 8040 650 477 8040 823 693 11680 823
45.30 44.67 0.595 6.435 6.310 13.141 6.397 6.97 9.191 69.9 506 8090 689 506 8090 873 735 11750 873
47.10 46.73 0.625 6.375 6.250 13.744 6.347 7.31 9.653 70.2 531 8120 724 531 8120 917 772 11800 917
51.20 50.91 0.687 6.251 6.126 14.974 6.390 4.99 9.050 60.4 498 6990 679 498 6990 860 724 10160 860
53.06 52.57 0.712 6.201 6.076 15.463 6.384 5.07 9.218 59.6 507 6890 691 507 6890 876 737 10010 876
7-3/4 46.10 45.47 0.595 6.560 6.500 13.374 6.555 6.92 9.303 69.6 512 8040 698 512 8040 884 744 11690 884
8-5/8 24.00 23.57 0.264 8.097 7.972 6.934 8.032 3.23 3.788 54.6 208 6300 284 208 6300 360 303 9180 360
28.00 27.02 0.304 8.017 7.892 7.947 7.962 3.83 4.536 57.1 249 6580 340 249 6580 431 363 9600 431
32.00 31.10 0.352 7.921 7.875 9.149 7.880 4.53 5.423 59.3 298 6840 407 298 6840 515 434 9970 515
36.00 35.14 0.400 7.825 7.700 10.336 7.753 4.63 6.819 66.0 375 7620 511 375 7620 648 546 11100 648
40.00 39.29 0.450 7.725 7.625 11.557 7.665 5.22 7.778 67.3 428 7780 583 428 7780 739 622 11310 739
44.00 43.39 0.500 7.625 7.500 12.763 7.669 3.65 7.423 58.2 408 6720 557 408 6720 705 594 9780 705
49.00 48.00 0.557 7.511 7.386 14.118 7.583 4.05 8.338 59.1 459 6820 625 459 6820 792 667 9930 792
9-5/8 36.00 34.86 0.352 8.921 8.765 10.254 8.875 4.71 6.147 59.9 338 6930 461 338 6930 584 492 10800 584
40.00 38.94 0.395 8.835 8.750 11.454 8.797 3.57 6.865 59.9 378 6930 515 378 6930 652 549 10070 652
43.50 42.69 0.435 8.755 8.599 12.559 8.680 5.09 8.361 66.5 460 7690 627 460 7690 794 669 11190 794
47.00 46.14 0.472 8.681 8.525 13.572 8.646 5.50 8.961 66.0 493 7630 672 493 7630 851 717 11100 851
53.50 52.85 0.545 8.535 8.500 15.546 8.565 5.50 9.780 62.9 538 7270 734 538 7270 929 782 10570 929
58.40 57.38 0.595 8.435 8.375 16.879 8.459 5.69 10.970 65.0 603 7510 823 603 7510 1042 878 10930 1042
9-7/8 62.80 61.74 0.625 8.625 8.469 18.162 8.565 7.34 12.769 70.3 702 8120 958 702 8120 1213 1022 11820 1213
10-3/4 40.50 38.88 0.350 10.050 9.894 11.435 10.008 4.64 6.854 59.9 377 6930 514 377 6930 651 548 10070 651
45.50 44.22 0.400 9.950 9.875 13.006 9.936 4.99 7.796 59.9 429 6930 585 429 6930 741 624 10080 741
51.00 49.50 0.450 9.850 9.694 14.561 9.764 5.27 9.831 67.5 541 7810 737 541 7810 934 786 11340 934
55.50 54.21 0.495 9.760 9.625 15.947 9.802 5.59 9.559 59.9 526 6930 717 526 6930 908 765 10080 908
60.70 59.40 0.545 9.660 9.504 17.473 9.585 5.91 12.175 69.7 670 8060 913 670 8060 1157 974 11710 1157
65.70 64.53 0.595 9.560 9.404 18.982 9.665 6.22 11.378 59.9 626 6930 853 626 6930 1081 910 10070 1081
11-3/4 60.00 58.81 0.489 10.772 10.625 17.300 10.815 5.52 10.369 59.9 570 6920 778 570 6920 985 830 10080 985
65.00 63.97 0.534 10.682 10.625 18.816 10.699 5.61 11.067 58.8 609 6800 830 609 6800 1051 885 9880 1051
71.00 69.42 0.582 10.586 10.430 20.420 10.687 6.11 12.240 59.9 673 6920 918 673 6920 1163 979 10070 1163
74.60 73.47 0.618 10.514 10.358 21.613 10.638 6.31 12.955 59.9 713 6930 972 713 6930 1231 1036 10070 1231
11-7/8 71.80 70.19 0.582 10.711 10.555 20.648 10.812 6.11 12.377 59.9 681 6930 928 681 6930 1176 990 10070 1176
13-3/8 61.00 59.45 0.430 12.515 12.359 17.487 12.531 5.10 10.482 59.9 577 6930 786 577 6930 996 839 10080 996
68.00 66.10 0.480 12.415 12.259 19.445 12.461 5.41 11.656 59.9 641 6930 874 641 6930 1107 932 10070 1107
72.00 70.60 0.514 12.347 12.250 20.768 12.298 6.03 14.339 69.0 789 7980 1075 789 7980 1362 1147 11600 1362
77.00 75.33 0.550 12.275 12.119 22.160 12.363 5.86 13.283 59.9 731 6930 996 731 6930 1262 1063 10080 1262
85.00 82.90 0.608 12.159 12.003 24.386 12.284 6.19 14.617 59.9 804 6930 1096 804 6930 1389 1169 10070 1389
13-5/8 88.20 86.78 0.625 12.375 12.219 25.525 12.343 7.34 18.048 70.7 993 8170 1354 993 8170 1715 1444 11890 1715

See page 31 for data table notes.

34 © Grant Prideco December 2000. All rights reserved.

P R E M I U M C O N N E C T I O N S
 A T L A S B R A D F O R D

TM
ST-L Casing and Tubing Connection Data

Load Data
N-80 C-90 C-95/T-95 High Collapse-95 P-110 Q-125
Reference Reference Reference Reference Reference Reference Reference Reference Reference Reference Reference Reference
Tensile String Minimum Tensile String Minimum Tensile String Minimum Tensile String Minimum Tensile String Minimum Tensile String Minimum
Joint Length Parting Joint Length Parting Joint Length Parting Joint Length Parting Joint Length Parting Joint Length Parting Size
Strength DF = 1.4 Load Strength DF = 1.4 Load Strength DF = 1.4 Load Strength DF = 1.4 Load Strength DF = 1.4 Load Strength DF = 1.4 Load OD
1000 lbs ft 1000 lbs 1000 lbs ft 1000 lbs 1000 lbs ft 1000 ft 1000 lbs ft 1000 lbs 1000 lbs ft 1000 lbs 1000 lbs ft 1000 lbs in.
602 11540 752 677 12980 752 714 13690 790 714 13690 827 827 15850 940 940 18020 1015 7
684 12100 805 725 12810 805 765 13353 845 765 13530 886 886 15660 1006 1006 17800 1087
665 10930 831 748 12290 831 790 12980 873 790 12980 914 914 15020 1039 1039 17070 1122
689 10860 861 775 12220 861 818 12900 904 818 12900 947 947 14930 1076 1076 16970 1162
785 11470 981 883 12900 981 932 13620 1030 932 13620 1079 1079 15770 1226 1226 17920 1324
317 9650 396 357 10860 396 377 11470 416 377 11470 436 436 13270 496 496 15100 535 7-5/8
350 9780 437 394 11010 437 415 11600 459 415 11600 481 481 13440 547 547 15290 590
444 10920 555 500 12300 555 527 12960 583 527 12960 611 611 15030 694 694 17070 749
519 11920 649 584 12630 649 616 13330 681 616 13330 714 714 15430 811 811 17540 876
571 10720 714 642 12050 714 678 12730 749 678 12730 785 785 14740 892 892 16740 963
693 11680 867 780 13140 867 823 13870 910 823 13870 953 953 16060 1084 1084 18270 1170
735 11750 919 827 13220 919 873 13960 965 873 13960 1011 1011 16170 1149 1149 18370 1241
772 11800 965 869 13280 965 917 14020 1014 917 14020 1062 1062 16230 1207 1207 18450 1303
724 10160 905 815 11430 905 860 12070 950 860 12070 996 996 13970 1131 1131 15870 1222
737 10010 922 830 11280 922 876 11900 968 876 11900 1014 1014 13780 1152 1152 15650 1244
744 11690 930 837 13150 930 884 13890 977 884 13890 1023 1023 16070 1163 1163 18270 1256 7-3/4
303 9180 379 341 10330 379 360 10910 398 360 10910 417 417 12640 474 474 14360 511 8-5/8
363 9600 454 408 10790 454 431 11390 476 431 11390 499 499 13190 567 567 14990 612
434 9970 542 488 11210 542 515 11830 569 515 11830 597 597 13710 678 678 15570 732
546 11100 682 614 12480 682 648 13170 716 648 13170 750 750 15250 852 852 17320 921
622 11310 778 700 12730 778 739 13430 817 739 13430 856 856 15560 972 972 17670 1050
594 9780 742 668 11000 742 705 11610 779 705 11610 817 817 13450 928 928 15280 1002
667 9930 834 750 11170 834 792 11790 875 792 11790 917 917 13650 1042 1042 15510 1126
492 10080 615 553 11340 615 584 11970 645 584 11970 676 676 13850 768 768 15740 830 9-5/8
549 10070 687 618 11340 687 652 11960 721 652 11960 755 755 13850 858 858 15740 927
669 11190 836 752 12590 836 794 13290 878 794 13290 920 920 15390 1045 1045 17490 1129
717 11100 896 806 12480 896 851 13170 941 851 13170 986 986 15260 1120 1120 17340 1210
782 10570 978 880 11890 978 929 12560 1027 929 12560 1076 1076 14540 1223 1223 16530 1320
878 10930 1097 987 12290 1097 1042 12970 1152 1042 12970 1207 1207 15030 1371 1371 17070 1481
1022 11820 1277 1149 13290 1277 1213 14030 1341 1213 14030 1405 1405 16250 1596 1596 18460 1724 9-7/8
548 10070 685 617 11340 685 651 11960 720 651 11960 754 754 13850 857 857 15740 925 10-3/4
624 10080 780 702 11340 780 741 11970 819 741 11970 858 858 13860 975 975 15750 1052
786 11340 983 885 12770 983 934 13480 1032 934 13480 1081 1081 15600 1229 1229 17730 1327
765 10080 956 860 11330 956 908 11960 1004 908 11960 1051 1051 13850 1195 1195 15750 1290
974 11710 1218 1096 13180 1218 1157 13910 1278 1157 13910 1339 1339 16100 1522 1522 18300 1644
910 10070 1138 1024 11330 1138 1081 11970 1195 1081 11970 1252 1252 13860 1422 1422 15740 1536
830 10080 1037 933 11330 1037 985 11960 1089 985 11960 1141 1141 13860 1296 1296 15740 1400 11-3/4
885 9880 1107 996 11120 1107 1051 11740 1162 1051 11740 1217 1217 13590 1383 1383 15440 1494
979 10070 1224 1102 11340 1224 1163 11970 1285 1163 11970 1346 1346 13850 1530 1530 15740 1652
1036 10070 1296 1166 11340 1296 1231 11970 1360 1231 11970 1425 1425 13850 1619 1619 15740 1749
990 10070 1238 1114 11340 1238 1176 11970 1300 1176 11970 1361 1361 13850 1547 1547 15740 1671 11-7/8
839 10080 1048 943 11330 1048 996 11970 1101 996 11970 1153 1153 13850 1310 1310 15740 1415 13-3/8
932 10070 1166 1049 11340 1166 1107 11960 1224 1107 11960 1282 1282 13850 1457 1457 15740 1574
1147 11600 1434 1291 13060 1434 1362 13780 1506 1362 13780 1577 1577 15960 1792 1792 18130 1936
1063 10080 1328 1195 11330 1328 1262 11970 1395 1262 11970 1461 1461 13850 1660 1660 15740 1793
1169 10070 1462 1316 11340 1462 1389 11970 1535 1389 11970 1608 1608 13850 1827 1827 15740 1973
1444 11890 1805 1624 13370 1804 1714 14110 1895 1714 14110 1895 1985 15600 2256 2256 18570 2436 13-5/8

See page 31 for data table notes.

© Grant Prideco December 2000. All rights reserved. 35