Chicago Tube and Iron stocks various types of hydraulic fluid line tubing.

SeamlessSAE J524
WeldedSAE J525
WeldedSAE J526
WeldedSAE J356
WeldedSAE J2435

Hydraulic fluid line tubing can be easily bent into angle turns or sweep bends. Pipe fittings, which are subject to leakage, are eliminated. It has a bright, smooth, scale free I.D. to minimize turbulence and pressure drop.

HYDRAULIC TUBING

Outside
Diameter
(OD) and Ga.
inches
Wall
Dec.-In.
Inside
Diameter
(ID)
Weight
Lbs./Ft.
Seamless
Welded
  1/8 OD
22
0.028
0.069
0.0290
X
X
  3/16 OD
22
0.028
0.131
0.0478
X
20
0.035
0.117
0.0572
X
X
18
0.049
0.089
0.0727
X
  1/4 OD
22
0.028
0.194
0.0664
X
X
20
0.035
0.180
0.0804
X
X
18
0.049
0.152
0.1052
X
X
16
0.065
0.120
0.1284
X
  5/16 OD
20
0.035
0.242
0.1039
X
X
18
0.049
0.215
0.1382
X
16
0.065
0.182
0.1722
X
14
0.083
0.146
0.2039
X
  3/8 OD
22
0.028
0.319
0.1038
X
20
0.035
0.305
0.1271
X
X
18
0.049
0.277
0.1706
X
X
17
0.058
0.259
0.1964
X
X
16
0.065
0.245
0.2152
X
X

HYDRAULIC TUBING

Outside
Diameter
(OD) and Ga.
inches
Wall
Dec.-In.
Inside
Diameter
(ID)
Weight
Lbs./Ft.
Seamless
Welded
  1/2 OD
20
0.035
0.430
0.1738
X
X
18
0.049
0.402
0.2360
X
X
16
0.065
0.370
0.3020
X
X
14
0.083
0.334
0.3696
X
X
13
0.095
0.310
0.4109
X
  5/8 OD
20
0.035
0.555
0.2205
X
X
18
0.049
0.527
0.3014
X
X
16
0.065
0.495
0.3888
X
X
14
0.083
0.459
0.4805
X
X
13
0.095
0.435
0.5377
X
  3/4 OD
20
0.035
0.680
0.2673
X
X
18
0.049
0.652
0.3668
X
X
16
0.065
0.620
0.4755
X
X
15
0.072
0.606
0.5214
X
14
0.083
0.584
0.5913
X
X
13
0.095
0.560
0.6646
X
X
12
0.109
0.532
0.7462
X
X
11
0.120
0.510
0.8074
X
X
  7/8 OD
20
0.035
0.805
0.3140
X
18
0.049
0.777
0.4323
X
X
16
0.065
0.745
0.5623
X
X
14
0.083
0.709
0.7021
X
X
13
0.095
0.685
0.7914
X
X
12
0.109
0.657
0.8917
X
X
11
0.120
0.635
0.9676
X

HYDRAULIC TUBING

Outside
Diameter
(OD) and Ga.
inches
Wall
Dec.-In.
Inside
Diameter
(ID)
Weight
Lbs./Ft.
Seamless
Welded
  1 OD
20
0.035
0.930
0.3607
X
18
0.049
0.902
0.4977
X
X
16
0.065
0.870
0.6491
X
X
14
0.083
0.834
0.8129
X
X
13
0.095
0.810
0.9182
X
X
12
0.109
0.782
1.0370
X
X
11
0.120
0.760
1.1280
X
X
  1-1/8 OD
16
0.065
0.995
0.7359
X
11
0.120
0.885
1.2880
X
  1-1/4 OD
18
0.049
1.152
0.6285
X
16
0.065
1.120
0.8226
X
14
0.083
1.084
1.0340
X
13
0.095
1.060
1.1720
X
12
0.109
1.032
1.3280
X
11
0.120
1.010
1.4480
X
  1-1/2 OD
16
0.065
1.370
0.9962
X
14
0.083
1.334
1.2560
X
13
0.095
1.310
1.4260
X
12
0.109
1.282
1.6190
X
11
0.120
1.260
1.7690
X
10
0.134
1.232
1.9550
X
  2 OD
16
0.065
1.870
1.3430
X
13
0.095
1.810
1.9330
X
11
0.120
1.760
2.4090
X
10
0.134
1.732
2.6700
X