COIL SPRINGAccording to one embodiment, a coil spring includes a wire rod with a first end and a second end. The wire rod includes a round section portion including a round first cross section perpendicular to a…DRIVE·Dec 7·2 min readFollowF16F1/043NHK SPRING CO., LTD.
COIL SPRINGA coil spring includes a wire rod and an elastic coat provided on the wire rod. The coil spring includes a coil section including a plurality of coil portions. The wire rod includes a round cross-sect…DRIVE·Sep 28·1 min readFollowF16F1/043NHK SPRING CO., LTD.
