... , Carbon Steel Wire, Spring Wire, Mattress Spring Wire, Spring Wire for Mattress2. Material: MaterialCarbon%Silicon%Manganese%Phosphorus%Sulphur %Chromium%Nickel%Cuprum ... .20≤0.2512L140.060.050.920.060.278Pb: 0.243 3. Production Standard: GB4357-89, JIS G3521-1991, DIN17223-1, BS ... , Thailand, Philippines, Bangladesh, Sri Lanka, Iran, Israel, Brazil, South Africa Hard Drawn High Carbon Spring Steel Wire ...