Specifications

• External Diametre
• From smallest D Ø25m/m to largest D Ø150m/m.
• Length L≤200m/m.
• L/D≤28
• Source:SKD61 or DIMI8850 or SACM645 or SCM440
• Hardness Rockwell C
• Hrc 48°~65°
• HRC of Ordinary Nitrided Alloy Screw (Time=120hours)
• HRC of PTA Bimetallic Alloy Screw
• HRC of Electroplating Alloy Screw(only SCM440)
• PTA Bimetallic Alloy Screw
• Bimetallic screw and cylinder set-with 9.5% tungsten carbide composition included in the cylinder's bimetallic content, coupled with a screw whose flights are hardened through PTA Bimetallic alloy treatment process