... Standard:GB4357-89;DIN17223;JIS3512-9;EN10270-1;70# 72B Mattress Spring Steel WireSpecificationDiameter: 0.3mm-5.5mmWeight of coils:100kgs or as ... T5103-93;ASTM-A229MaterialC45,C50,C55,C60,C65,C70,C75,65Mn,C72A,C72B,C80,C82B,SAE65,SAE70,SAE1006,SAE1008,SAE1010, ... SAE1015,SAE1018,65Mn,CT9A,GCr15, AND SO ONKinds of ProductSpring Steel Wire; Cold -drawn Non-alloy Steel Wire For Springs;; ...