High carbon steel coil spring blue hardened 1.4x45mm

We Specialize in high carbon steel coil spring blue hardened 1.4x45mm with high quality and moderate price over 15years,the Majority of customers from America,Italy,South America,Asia,France,Africa.etc,So it had full experience in how to control the right hardness in various market and the way bending.On the other hand, from first-rate raw material,cold rolling,hardened and tempered process,de-burring edges,etc each production step,is checked carefully in thickenss,width,hardness,edge as flexbility by our professional inspect team