1.4mm Spring 2.Material: 45#,60#,65#,C70DA,C82DA,70#,80#,72A,72B,82B. 3.Spring for mattres, ... Lanka, Iran, Syria, Brazil, South Africa, Turkey, India, Bangladesh,5. Our other product: High carbon steel wires, medium carbon steel ... mattress spring steel wires.6. Our other material: 60#,65#,C70DA,C82DA,70#,80#,72A,72B,82B.7. Wire Gauge:0 ... .7mm,3.8mm,4mm,4.2mm,4.5mm,5mm,5.5mm,6mm,6.5mm,7mm,8mm,9mm,10mm,11mm ...