Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
Q5
Metric Tube
4300
Catalog
Dimensions and pressures for reference only, subject to change.
Seamless EO Steel Tubes Material E235N (St. 37.4) (continued)
Tolerances DIN EN 10305-4
Order code
Design pressure bar
Phosphated Cr(VI)-
Tube Tolerance Wall
Tube
DIN
DIN
Burst
and oiled
free
O.D.
thickness I.D.
2413
I
2413
III
pressure
Weight
(
mm)
(
mm)
(
mm)
Static
Dynamic
bar
kg/m
R20X1.5CF
20
1.50
17.0
212
190
675
0.684
R20X2 R20X2CF
20
2.00
16.0
282
248
900
0.888
R20X2.5 R20X2.5CF
20
±0.08
2.50
15.0
353
303
1100
1.079
R20X3 R20X3CF
20
3.00
14.0
423
357
1400
1.258
R20X3.5CF
20
3.50
13.0
494
408
1650
1.424
R20X4CF
20
4.00
12.0
564
458
2000
1.578
R22X1.5 R22X1.5CF
22
1.50
19.0
192
173
550
0.758
R22X2 R22X2CF
22
±0.08
2.00
18.0
256
227
775
0.986
R22X2.5 R22X2.5CF
22
2.50
17.0
320
278
1025
1.202
R22X3CF
22
3.00
16.0
385
328
1175
1.406
R25X2 R25X2CF
25
2.00
21.0
226
201
725
1.134
R25X2.5 R25X2.5CF
25
2.50
20.0
282
248
850
1.387
R25X3 R25X3CF
25
±0.08
3.00
19.0
338
292
1025
1.628
R25X4 R25X4CF
25
4.00
17.0
451
378
1500
2.072
R25X4.5 R25X4.5CF
25
4.50
16.0
508
418
1625
2.275
R28X1.5 R28X1.5CF
28
1.50
25.0
151
138
425
0.980
R28X2 R28X2CF
28
2.00
24.0
201
181
600
1.282
R28X2.5 R28X2.5CF
28
±0.08
2.50
23.0
252
223
750
1.572
R28X3 R28X3CF
28
3.00
22.0
302
264
900
1.850
R30X2CF
30
2.00
26.0
188
170
575
1.381
R30X2.5 R30X2.5CF
30
2.50
25.0
235
209
725
1.695
R30X3 R30X3CF
30
±0.08
3.00
24.0
282
248
850
1.998
R30X4 R30X4CF
30
4.00
22.0
376
321
1175
2.565
R30X5 R30X5CF
30
5.00
20.0
470
391
1600
3.083
R35X2 R35X2CF
35
±0.15
2.00
31.0
161
147
450
1.628
R35X2.5 R35X2.5CF
35
2.50
30.0
201
181
600
2.004
R35X3 R35X3CF
35
3.00
29.0
242
215
700
2.367
R35X4CF
35
4.00
27.0
322
280
960
3.058
R38X2.5CF
38
2.50
33.0
186
168
550
2.189
R38X3 R38X3CF
38
3.00
32.0
223
199
675
2.589
R38X4 R38X4CF
38
±0.15
4.00
30.0
297
260
900
3.354
R38X5 R38X5CF
38
5.00
28.0
371
318
1150
4.069
R38X6CF
38
6.00
26.0
445
373
1425
4.735
R38X7CF
38
7.00
24.0
519
427
1700
5.352
R42X2 R42X2CF
42
±0.2
2.00
38.0
134
123
375
1.973
R42X3 R42X3CF
42
3.00
36.0
201
181
575
2.885
R42X4 R42X4CF
42
4.00
34.0
269
237
850
3.749
R50X6
50
±0.2
6.00
38.0
338
292
6.511
R65X8
65
±0.3
8.00
49.0
347
299
11.246
Remarks:
Corrosion
—
Additional allowances are not consid-
ered for the calculation of pressures
are calculated for static stress in accordance with
DIN 2413 Part III, but with K = 235 N/mm
2
When a specific factor of safety is required, calcu-
lations should be based upon the burst pressures
shown in the above tables.
Temperature range:
-40
°C up to 120°C without
pressure reductions.
Surface finish:
Tubes with I.D. 1.5 to 5 mm: outside and inside oiled.
Tubes from 6 mm I.D. and above: outside and inside
phosphated and oiled.
For increased temperatures:
control calculation according to DIN 2413
required (static application above 120 °C).
Material strength K for increased temperatures:
da (bar)
dimax.
>
2
Table Q3 — Seamless EO steel tubes (cont’d.)
20
•
K
•
a
•
c
(
bar)
P =
S
•
(
da + a
•
c)
Temperature in °C K
(
Nmm
2
)
up to 200
185
up to 250
165