Model Number: 3.5inch-#1400
Brand Name: king pin for trailer
Key Specifications/Special Features:
Material is 40CR cold forging processing into blank, then the machine processedAnti-torque is strongWhole king pin can be tempered, excellent resistance to impactsMedium frequency quenching HRC45-55, heat treatment increase the rigidity and the useful lifeAll of king pin are checked by flaw detector