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