... spring,which are widely applied in many industries. Spring Steel Wire:Certification: ISO9001-2000; GB/T19001-20001) Bright thin ... wire: dia.1.0-12mm2) Grade: AISI201, AISI202, AISI301, AISI302, AISI303, ... , AISI420, AISI430, AISI430FR, AISI431, AISI630, 15-5PH, 17-4PH 3) Weight of coil:about 60kg.4) Tensile Strength: 1100-2000N/mm2Packing ...