estimation of quality for steel wire ropes according

Life and work dependability of steel wire ropes depend also on their quality. Test results of the steel wire ropes for pull, bend and torque are used for determination of their work capacity by safety factors and standards. To estimate the quality of steel wire ropes a factor of unequal pull steel wires, which we evaluated for sixty nine operating steel wire ropes made in various countries, can be calculated. The tests revealed that producers of steel wire ropes use for their products steel wires with unequal properties, so that results of the calculation is more disperse especially for bend and torque. Our results this type of steel wire ropes to have no guarantee of long life in comparison with present standards.