Steel cord of truck and bus tire for heavy duty

摘要

PURPOSE: A steel cord of tires of a truck and a bus for high load is provided, which is characterized by increasing excellent breaking property because of increasing rubber penetrating property, having no a lean of filament and no untwist of a cross section in a cord layer by removing the warp, and improving durability. CONSTITUTION: On the belts of a truck tire and a bus tire, the cord having a structure of 3d+8d+13d(d:filament diameter) is used. A twisting direction of the cord is SZS. A twisting length of the cord is 4-6mm/10-15mm/18-24mm.