Track chain link assembly for excavators and bulldozers material:40Mn2 HRC55-58,Depth:8-10mm Gurantee ... undercarriage parts for heavy construction machinery,such as excavators and dozers,applicable for caterpillar,komatsu,hitachi,daewoo,kobelco,sumitomo ... ,hyundai,samsung,volvo,mitubishi.Our track chain link assembly are specifically designed, engineered and manufactured,use high quality raw material, ...