... high strength 3 parts wedge 2.Material:20CrMnTi 3.Model type for PC strand: 12.7mm,15.2mm Production Process:1.The high ... strength 3 parts wedge is manufactured from case hardened ... Characteristics that effect this interplay are wedge angle, wedge teeth amplitude and spacing, type of ... and finish also effect the efficiency of wedge systems. Our company have quality control ...