... China Patent for Invention Self-developed H13K,HMB and HMKhigh alloy steel BladeLinear guideway, shear blade, circular knives and spacers, ... and hot cutting linear blade, Square profiled cutting blade, Wear plates, Sheet metal coils cutting, etc 1 Pass the ISO9001 quality ... 9CrSi, H13,and self-developed H13K,HMB and HMK high alloy series 6 Features:High intensity, high hardness, high toughness, and ...