Tubing Selection

TUBING SELECTION

We recommend stainless steel cold drawn fully annealed seamless tubing to DIN 17458 or equivalent and provide tolerances to DIN 2391 part 1
The following tube wall thickness are recommended with stainless steel Bite-Lok® Tube Fittings
TUBE O.D. Tolerance Wall Thickness Weight Calculated pressure DIN 2413
mm mm mm kg/m I Bar III Bar
6 ±0.1 1 0.125 372 357
6 1.5 0.168 526 505
6 2 0.200 662 636
6 2.25 0.211 725 696
8 ±0.1 1 0.175 347 277
8 1.5 0.244 412 396
8 2 0.300 526 505
8 2.25 0.344 630 604
10 ±0.1 1 0.255 294 238
10 1.5 0.319 357 343
10 2 0.401 458 439
10 2.25 0.469 551 529
10 3 0.525 638 612
12 ±0.08 1 0.275 245 201
12 1.5 0.394 368 291
12 2 0.501 391 376
12 2.25 0.594 474 455
12 3 0.615 551 529
12 3.5 0.744 624 599
15 ±0.08 1.5 0.507 294 238
15 2 0.651 321 309
15 2.25 0.782 391 376
15 3 0.901 458 439
16 ±0.08 2 0.701 368 291
16 2.25 0.845 370 355
16 3 0.977 433 416
18 ±0.08 1.5 0.620 245 201
18 2 0.801 327 262
18 2.25 0.967 333 320
18 3 1.126 391 376
TUBE O.D. Tolerance Wall Thickness Weight Calculated pressure DIN 2413
mm mm mm kg/m I Bar III Bar
20 ±0.08 2.5 1.095 368 291
20 3 1.277 357 343
20 3.5 1.443 408 392
20 4 1.600 458 439
22 ±0.08 2 1.002 267 218
22 2.5 1.220 334 267
22 3 1.426 328 315
25 ±0.08 2 1.152 235 193
25 2.5 1.408 294 238
25 3 1.635 353 281
25 4 2.092 378 363
25 4.5 2.307 418 402
25 5 2.501 458 439
28 ±0.08 2 1.302 210 174
28 2.5 1.594 263 214
28 3 1.874 315 253
28 4 2.402 342 328
28 5 2.876 415 399
30 ±0.08 3 2.028 294 238
30 4 2.605 321 309
30 5 3.400 391 376
35 ±0.15 2 1.644 168 141
35 2.5 2.018 210 174
35 3 2.392 252 206
35 4 3.086 336 269
35 5 3.742 342 328
35 6 4.351 401 385
38 ±0.15 4 3.405 309 249
38 5 4.131 318 305
38 6 4.807 373 358
38 7 5.426 427 410
42 ±0.2 3 2.930 210 174
42 4 3.798 280 227

Note : Parallel sleeves are recommended where thin walled tube are subject to serve strains.
Calculated pressures to DIN 2413, scope of application I,
for primarily static load conditions at temperatures up to 120ºC.
YIELD POINT/RP1.0 :225N/mm2 (to DIN 17458)
DESIGN FACTOR :1.5
ALLOWANCE FACTOR C1 :10% of wall thickness
ALLOWANCE FACTOR C2 :0 (no allowance for corrosion)
For a diameter ratio of u = OD/ID>1.35,
calculation made to DIN 2413/III and based on a pulsating
fatigue limit of 225 N/mm2.

Calculated pressures to DIN 2413, scope of application III,
for pulsating load conditions at temperatures up to 120ºC.
PULSATING FATIGUE LIMIT :216 N/mm2 (assumed value)
ALLOWANCE FACTOR C1 :10% of wall thickness