bonnell coil spring
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Bonnell Spring Coil
1. Bigger diameter at the two ends and the smallest one in the middle, this shape offers a powerful vertical support upon being compressed. The material did not deform even after 100,000 durability tests. 2. The diameter of the main spring wire ranges from 2.0 to 2.4 mm, and it is subjected to 260°C high-temperature tempering to eliminate the internal stress, resulting in a long-lasting, stable elasticity. 3. Each spring unit is linked with serpentine steel wire, forming an entire support network with precise force distribution.
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