MH-174
UNDERGROUND MINING HOSE
Conforms to British Coal 174-1992 
Supersedes NCB 174-1973 ISO 6805-1984

Application Underground mining requiring very stringent safety standards like Longwall mining and roof support systems
Construction
Tube Synthetic oil resistant rubber
Reinforcement 2 high tensile steel wire braids
Cover Synthetic rubber – abrasion, ozone, weather and flame resistant
Temp. Range -40 C to +120 C
Impulse Cycles 100,000
 
Dash No
DN
Inside Diameter
Mean Diameter
Over Wire
Mean Outer
Cover Diameter
Maximum
Working Pressure
Minimum
Burst Pressure
Minimum Bend Radius
   
inch
mm
inch
mm
inch
mm
psi
bar
psi
bar
inch
mm
-
6
1/4
6.4
0.500
12.7
0.669
17.0
6525
450
26100
1800
4.0
100
-
10
3/8
9.5
0.669
17.0
O.858
21.8
5510
380
22040
1520
5.1
130
-
12
1/2
12.7
0.850
21.6
1.039
26.4
5250
362
21000
1448
5.9
150
-
16
5/8
15.9
0.965
24.5
1.173
29.8
4060
280
16240
1120
7.5
190
-
20
3/4
19.0
1.114
28.3
1.327
33.7
4000
276
16000
1103
9.0
230
-
25
1
25.4
1.390
35.3
1.602
40.7
3120
215
12480
860
11.8
300
-
32
1 1/4
31.8
1.630
41.4
1.870
47.5
2495
172
9975
688
15.0
380
-
40
1 1/2
38.1
1.890
48.0
2.130
54.1
2120
146
8470
584
17.7
450
-
50
2
50.8
2.390
60.7
2.630
66.8
1625
112
6500
448
23.6
600
 
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