... : AISI, ASTM, BS, DIN, GB, JIS, custome... spring steel place of Origin: Tianjin China (Mainland) Brand Name: ZHUXIN Type: Spring Steel ... : 65Mn, 60Si2Mn and so on spring steel we are key rival of Baogang Groupspring steel with the short stress production line that ... in one process, we are able to produce dozens type of spring flat steel from 6*40mm to 20*150mm. The ...