... and ODM 3>EXW price & strictly quality control Steel drum spring manufacturerFeatures: 1) Wire Diameter: 0.08~ ... Type: compression drum spring. 3) Main material: carbon spring steel, alloy spring steel, refractory, music wire, steel, stainless steel, high temperature ... with compression spring, torsion spring, extension/tension spring, steel spring, hook spring, furniture spring, industrial spring, ...