Compound for wire reinforced hydraulic hose
 Wire reinforced hydraulic hose is mainly used in conveying mineral oils and hydraulic working oils. It has good pressure resistance, ozone resistance and pulse resistance at -40℃～100℃.
HJG series of hose material implements national standard GB/T 3683-2006 Rubber hoses and hose assemblies-wire reinforced hydraulic type and complies with standard requirements. The finished hose products have passed the detection of Shenyang Research and Design Institute, and the result is as follows:
| Test item |
Reference for test |
Testing conditions |
Results |
| Static pressure test |
GB/T5563-1994 |
40MPa×30s |
normal |
| Length change rate |
20MPa working pressure is not greater than +2%～-4% |
-0.8% |
| Bursting test |
≥80MPa |
84MPa |
| Llow-temperature bend test |
GB/T5564-1994 |
-40±3℃×6h 180° bending |
Not cracking |
| After recovery of room temperature, 40MPa×30s |
No leakage |
| Oil resistance test |
GB/T1690-1992 |
3# standard oil, 100℃×70h volume change rate≤100% |
Internal compound: 55.6% External compound: 50.8% |
| Ozone resistance test |
HG/T2869-1997 |
50pphm×40℃×70h,
Zoom in twice, without cracking on surface |
Not cracking |
| Ply bond |
GB/T14905-1994 |
Bond strength with steel wire layer≥2.5KN/m |
Internal compound: 5.9KN/m External compound: 6.0KN/m |
| Impulse test |
GB/T5568-1994 |
Temperature: 93±3℃ |
241350 times, normal |
| Pulse pressure: 26.6MPa |
| Frequency: 65 times/min |
| Waveform: square wave |
| Number of times: ≥200,000 times |
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