What kind of spring has the best performance?
Spring surface scars, spring surface injury to use a magnifying glass to see, manufacturers generally use 300 times electronic magnifying glass, spring 300 times, see the injury, the impact on life is very big.
Number of coils, coil number is greater than the difference between the 0.25 circle, will directly affect the intensity of emotion.
Spring verticality, verticality is bad, will directly affect the strength and life.
The length of the spring, with a number of differences between the spring, will affect the product intensity consistency.
Spring outside diameter, the same spring at both ends of the outer diameter and the middle of the outer diameter is not the same, unlike the spring, the force has a slight impact. The same batch is very different from each other, indicating that the machining accuracy is very poor.
