chrome hardened steel

基本解释

German hollow-ground hardened steel, high carbon chrome-plated blade.
德国空心地面硬化钢，高碳钢镀铬刀片。
www.e-gtm.com.cn
Manufactured from chrome vanadium steel, hardened and ground jaws with narrow profile for easier access and use in confined areas.
该款工具组套是采用铬钒钢材质制造，坚固耐用。
petool.com
Our company is the specialized factory manufacturing mud pump liner metric and British system chrome –plated liner, hardened steel liner and ceramic liner.
本公司是专业生产泥浆泵公、英制双金属缸套和单金属缸套及陶瓷缸套的厂家；
oilguideonline.com