PIN

· Real quenching process to ensure core hardness with at least HRC20 or up 

·Surface hardness with HRC56-60 

·Medium frequency heat treatment instead of high-frequency to ensure the thickness of hardness more than 1.8mm 

· Longer wear life 

· Excellent surface plating, including hard Chrome plate can be chosen 

·Material:40CR or 42CRMO material can be chosen 

·Wearlessness: For pins, after quenching and tempering, then do surface intermediate frequency treatment, to assure the enough inside hardness and outside wearlessness.