chrome hardened steel

基本解释

German hollow-ground hardened steel, high carbon chrome-plated blade.
德國空心地麪硬化鋼，高碳鋼鍍鉻刀片。
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.
該款工具組套是採用鉻釩鋼材質制造，堅固耐用。
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.
本公司是專業生産泥漿泵公、英制雙金屬缸套和單金屬缸套及陶瓷缸套的廠家；
oilguideonline.com