... : 1) Wire Diameter: 0.08mm~ 10mm 2) Type: Machine torsion wire spring. 3) Main material: carbon spring steel, ... high and low temperatures 5) Surface treatment: Zinc plating, powdering coat, blacking, nickel plating etc. or customized coating is ... furniture spring, industrial spring, car/vehicle spring, auto spring, machine spring,wire spring, coiled spring, cylinder spring, electronic spring with ...