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Extension spring (also named tension spring and helical tension spring) is a helical spring to bear axial tension. It usually takes circular section material to creat equal pitch, thus the cross section is always round. In the absence of load, ...

compression spring is under pressure to the spiral spring, in which the material section is round, rectangular and is also useful multi strand steel rayon coiled spring, generally for pitch, compression spring shapes: cylindrical, conical, convex ...

Extension spring (also named tension spring and helical tension spring) is a helical spring to bear axial tension. It usually takes circular section material to creat equal pitch, thus the cross section is always round. In the absence of load, ...