This standard is suitable for measuring the repeated bending resistance of metal wires with a diameter of 0.7 to 7.0 mm at room temperature (20+10)℃ and (20-5)℃.
HB 5175-1981 history
1996HB 5175-1996 Metal wire repeated bending test method
1970HB 5175-1981 Metal wire repeated bending test method