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Large diameter dredge suction and discharge hose
Large diameter dredge suction and discharge hose is composed of an inner rubber layer, an inner protective layer, a middle rubber layer, spiral wire layers and the outer rubber layer. Flange may be required as per design.
II. Use
The dredge suction and discharge hose is mainly for use in dredging operations at working pressure from 0.4MPa to 0.5MPa.
III. Working temperature
-20°C~+30°C
IV. Performance indicators
|
Test Item |
CNS for Inner Rubber Layer |
Company standard |
CNS for Outer Rubber Layer |
Company standard |
|
Breaking tensile strength, MPa |
>120 |
>150 |
>100 |
>130 |
|
Breaking elongation, % |
>400 |
>500 |
>400 |
>500 |
|
Akron abrasion, cm2/1.6km |
1 |
<0.8 |
1 |
<0.8 |
|
SHORE hardness |
|
60-66 |
|
60-66 |
|
Working temperature (°C) |
|
-40~+60 |
|
-40~+60 |
V. Technical Specification
|
Item |
Nominal I.D. |
Inner layer thickness t2 |
Flange O.D., D1 |
Flange O.D., t1 |
Thread thickness t |
Screw hole |
|||
|
circle diameter |
QTY |
Diameter |
|||||||
|
200 |
205±3 |
10 |
320 |
+3 |
12±2 |
6 |
280±1.0 |
8 |
23±1 |
|
-2 |
|||||||||
|
250 |
254±3 |
385 |
+3 |
345±1.0 |
12 |
||||
|
-2 |
|||||||||
|
300 |
305±5 |
430 |
+3 |
390±1.0 |
|||||
|
-2 |
|||||||||
|
350 |
338±5 |
480 |
+3 |
19±2 |
435±1.0 |
||||
|
-2 |
|||||||||
|
400 |
388±5 |
540 |
+3 |
495±1.0 |
16 |
||||
|
-2 |
|||||||||
|
510 |
510±5 |
15 |
710 |
+3 |
9 |
650±1.0 |
|||
|
-2 |
|||||||||
|
560 |
560±5 |
765 |
+3 |
690±1.0 |
18 |
||||
|
-2 |
|||||||||
|
610 |
610±5 |
20 |
814 |
+3 |
22±2 |
750±1.0 |
20 |
||
|
-2 |
|||||||||
|
630 |
630±5 |
834 |
+3 |
765±1.0 |
25±1 |
||||
|
-2 |
|||||||||
|
660 |
660±5 |
870 |
+3 |
780±1.0 |
24 |
||||
|
-2 |
|||||||||
|
700 |
700±5 |
905 |
+3 |
25±2 |
840±1.0 |
27±1 |
|||
|
-2 |
|||||||||
|
710 |
710±5 |
930 |
+3 |
28±2 |
860±1.0 |
||||
|
-2 |
|||||||||
|
760 |
760±5 |
990 |
+3 |
900±1.0 |
30±1 |
||||
|
-2 |
|||||||||
|
800 |
800±5 |
25 |
1050 |
+3 |
32±2 |
12 |
970±1.0 |
32 |
30±1 |
|
-2 |
|||||||||
|
840 |
840±5 |
1090 |
+3 |
1010±1.0 |
|||||
|
-2 |
|||||||||
|
860 |
860±5 |
1090 |
+3 |
1010±1.0 |
|||||
|
-2 |
|||||||||