Spring Strips

Spring strips are typically made of Martensitic steel or stainless steel such as 62Si2MnA, 65Mn, BTX(1078) steel. The metal spring strips are widely used for stamping parts and elastic elements which require strong hardness, high strength and high elasticity. Zongda is equipped with advanced heat treatment facilities and updated the spring strip production process based on 25 years of industry experience, greatly improving the quality of the springs. The hardness and toughness of spring strips can be precisely controlled by adjusting the heat treatment conditions based on the needs of customers to make different strips with various characteristics. For instance, the temperature during heating process only has an error of +1℃ and the hardness of heat treatment is normally controlled within HV+10.

The facilities of heat treatment in Zongda can meet the production requirements. Our spring strips are processed using mature and environmental friendly water quenching instead of oil quenching. Spring strips are cooled by graphite to achieve a more reliable quality. The spring strips made by Zongda have a thickness range of 0.15-2.3mm, width of less than 200mm and the sizes can be changed based on customer needs.