For large trucks, Jinnge's best brake drums combine multiple advanced features. Constructed from nodular cast iron with a pearlitic matrix, they have a tensile strength of 600MPa and hardness of HB220-260, resisting wear and deformation. The inner surface is induction-hardened to a depth of 2-3mm, increasing surface hardness to HRC50-55, extending service life by 60%. A special anti-rust treatment (zinc-nickel plating with passivation) provides 1,000+ hours of salt spray resistance. These drums are compatible with ABS systems and have been tested on 6-axle trucks traveling at 100km/h, demonstrating stable braking performance even on steep gradients.