Cold drawn spring steel

WE HAS BEEN SPECIALIZING IN SPRING STEEL BAR/ COIL FOR OVER 25 YEARS, SO OUR ENGINEERS IS PROFESSIONAL IN THE PRODUCT LINE. WHEN U DRIVE A CAR OR SEAT IN A CHAIR, OUR PRODUCTS MAY BE IN USING. NOW,WE SEND U PRODUCTS DETAILS AS FOLLOWS. 1.Spring steel COIL ORROUND BAR 2.STEEL GRADE:SUP9,SUP9A,SUP10,SUP7,SUP12,SUP12V,SUP6,SUP7,SAE9254,SAE5160, SAE9260,SAE6150,55Cr3,51CrV4,52CrMoV4,55Si7,60Si7,28MnSiB,58CrMnB4,27MnMoVB, 65Mn,55CrSi,50CrV,60Si2Mn,CK67,60Si2CrVA,60Si2CrMnA 3.SIZES:D0.9 - D28.0*L 4.DELIVERY STATE: D1.0--D6.0 by cold drawn;D6.0--100 by hot rolled or cold drawn+ heat treatment by oil QUENCHED THAT YOU CAN CHOOSE;D101--D250MM by hot rolled;D200-D1000 by hot forged.