Base material: High-strength alloy structural steel, undergoes overall quenching and tempering heat treatment, with excellent resistance to bending and heavy-load impact, suitable for the heavy-duty operation conditions of flatbed trucks
Surface treatment: External circle high-frequency quenching + hard chromium coating, with a low friction coefficient, excellent wear resistance, rust prevention, and resistance to scratching and seizing, significantly extending service life.
Processing accuracy: Numerical control precision grinding dimensions, with tolerance matching the original factory hinge seat, assembly without overtravel, avoiding work jitter.
Flange design: Yellow rubber / polyurethane flange, with dual functions of axial positioning and dust-proof buffering, reducing oil seal wear at the hinge joint.
