We maintain a strict quality control by submitting our product to rigorous tests according to international standards ASTM-A407 and JIS-G3521 in our Quality Laboratory.
Standard Specification for Steel Wire, Cold-Drawn, for Coiled-Type Springs. This standard establishes specifications round wire, cold drawn, with expected quality properties and manufacturing steel springs Upholstery Types:
These types of upholstery springs are used in the manufacture of bed spring units, mattresses, furniture cushions, and automobile seats. This wire is not intended for the manufacture of mechanical springs.
1. Applicable standards to this standard are as follows:
2. Corresponding International Standards to this Standard are as follows: