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This is applied to Railway locomotive and it is made with alloy material with good fatigue performance. The diameter is between 20mm and 55mm.
Big spring (coil spring) design of the production line of 15 ~ 80mm diameter of spring (coil spring), big spring (coil spring) shape for the right-handed and left-handed pull force (pressure), cylindrical spring, torsion spring, and cone, convex, concave big spring etc..
Surface rust treatment: spray can, painting, plating, Dacromet or according to user requirements.
Alloy spring steel: 60Si2MnA, 50CrVA, 4Cr13, 60Si2CrA, load capacity: 500N-1 N.
Also known as the large coil spring spring, because the spring wire diameter is generally large, coil spring wire diameter reached 16-200mm, the production process uses hot coil technology. The giant spring is easy to twist and form after heating, and the springback is small. Spring applied to national defense, marine,
Aerospace, railway, nuclear power, wind power, thermal power, engineering machinery, mining machinery, construction machinery, elevator, coil spring supporting or replace steel mills and other equipment on domestic power plant.