NM400, NM450, thiab NM500 qib siab hnav resistant steel phaj yog dav siv nyob rau hauv mining machinery, thee mining thiab tsheb thauj mus los, siv machinery, ua liaj ua teb machinery, tsev cov ntaub ntawv, hluav taws xob machinery, railway tsheb thauj mus los, thiab lwm yam departments.Piv txwv li, lub thoob cov hniav thiab cov thoob ntawm excavators, cov hniav daim hlau thiab rauj ntawm ntau yam crushers, cov khau ntawm cov tsheb laij teb thiab cov tso tsheb hlau luam, shovels ntawm bulldozers, thiab linings ntawm loj-scale hluav taws xob log yog tsuas yog siv rau kev siv ntawm hnav. resistant steel raug rau abrasive hnav, thiab txhua yam ntawm cov cav tov yuav tsim ntau hom kev hnav, thiab yuav tsum muaj kev txhim kho kev hnav tsis kam ntawm cov khoom siv ua haujlwm lossis siv cov hlau resistant.