Standard Requirements: MT/T99 - 1997 Number: 26*92 MCB060146 30*108 MCB060143 34*126 MCB060145 38*137 MCB060144 Main Features: Can be used as flat ring and vertical ring, but also can be used in scraper conveyor and coal chipper. Process advantages: use of high alloy steel and multiple heat treatment processes to ensure its optimal compatibility with component chain wheels