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Table C1. Type K – Rated internal working pressure



Table C1, Part 1. Type K¹ – Rated internal working pressure
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Nominal
or
standard
size,
in inches
Annealed
S=
6000 psi
100F
S=
5100 psi
150F
S=
4800 psi
200F
S=
4800 psi
250F
S=
4700 psi
300F
S=
4000 psi
350F
S=
3000 psi
400F
1/4
1074
913
860
860
842
716
537
3/8
1130
960
904
904
885
753
565
1/2
891
758
713
713
698
594
446
5/8
736
626
589
589
577
491
368
3/4
852
724
682
682
668
568
426
1
655
557
524
524
513
437
327
1 1/4
532
452
425
425
416
354
266
1 1/2
494
420
396
396
387
330
247
2
435
370
348
348
341
290
217
Nominal
or
standard
size,
in inches
Drawn²
S=
11,300 psi
100F1
S=
11,300 psi
150F1
S=
11,300 psi
200F1
S=
11,300 psi
250F1
S=
11,000 psi
300F1
S=
10,300 psi
350F1
S=
4300 psi
400F1
1/4
2029
2029
2029
2029
1975
1850
772
3/8
2135
2135
2135
1695
1638
1601
1544
1/2
1683
1683
1683
1683
1638
1534
640
5/8
1389
1389
1389
1389
1352
1266
529
3/4
1609
1609
1609
1609
1566
1466
612
1
1235
1235
1235
1235
1203
1126
470
1 1/4
1003
1003
1003
1003
976
914
382
1 1/2
933
933
933
933
908
850
355
2
820
820
820
820
798
747
312

¹ Based on maximum allowable stress in tension (psi) for the indicated temperatures (°F).

² When brazing or welding is used to join drawn tube, the corresponding annealed rating
must be used.


 

 

Table C1, Part 2. Type K¹ – Rated internal working pressure

Nominal
or
standard
size,
in inches
Annealed
S=
6000 psi
100F
S=
5100 psi
150F
S=
4800 psi
200F
S=
4800 psi
250F
S=
4700 psi
300F
S=
4000 psi
350F
S=
3000 psi
400F
2 1/2
398
338
319
319
312
265
199
3
385
328
308
308
302
257
193
31/2
366
311
293
293
286
244
183
4
360
306
288
288
282
240
180
5
345
293
276
276
270
230
172
6
346
295
277
277
271
231
173
8
369
314
295
295
289
246
184
10
369
314
295
295
289
246
184
12
370
314
296
296
290
247
185
Nominal
or
standard
size,
in inches
Drawn²
S=
9000 psi
100F
S=
9000 psi
150F
S=
9000 psi
200F
S=
9000 psi
250F
S=
8700 psi
300F
S=
8500 psi
350F
S=
8200 psi
400F
21/2
598
598
528
598
578
565
545
3
579
579
579
579
559
546
527
31/2
549
549
549
549
531
519
500
4
540
540
540
540
522
510
492
5
517
517
517
517
500
488
471
6
520
520
520
520
502
491
474
8
554
554
554
554
535
523
505
10
554
554
554
554
535
523
504
12
555
555
555
555
537
524
506

¹ Based on maximum allowable stress in tension (psi) for the indicated temperatures (°F).

² When brazing or welding is used to join drawn tube, the corresponding annealed rating
must be used.

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