1) Supply: constant force spring, pecial spring, extension spring, compreesion spring, torsion spring, shaft, pressing part
2) Material: Stainless steel, high carbon steel, and other required.
3) Treatment: Heat Treatment to the surface,vacuum heat treatment, surface brightness
4) Length: according to customers specifications
5) Profession name: constant force spring, constant torque spring, single coil spring, twin/double/dual- coil spring, special spring
2) Material: Stainless steel, high carbon steel, and other required.
3) Treatment: Heat Treatment to the surface,vacuum heat treatment, surface brightness
4) Length: according to customers specifications
5) Profession name: constant force spring, constant torque spring, single coil spring, twin/double/dual- coil spring, special spring