Hnav steel resistant yog siv dav hauv cov tshuab tsuas, thee kev txiav thiab kev thauj mus los, cov tshuab tsim khoom, cov tshuab ua haujlwm, cov tshuab ua haujlwm thiab lwm cov chaw. Piv txwv li, cov pob zeb pob thiab cov pob zeb ntawm cov pob zeb thiab cov khau raj ntawm cov tshuab raj, cov hlua khi ntawm cov hlua khi, thiab ntiv tes sib txuas rau cov hlua roj av, thiab cov phuam qhwv taub hau. Duav hniav, cov hnab ntim rau cov log hluav taws xob loj, cov khoom siv tsis zoo rau cov khoom siv ua haujlwm, thiab txhua yam kev sib tw ntawm cov hlau ua haujlwm, thiab yuav tsum tau siv ntau yam ntawm cov hlau ua haujlwm, thiab yuav tsum tau siv ntau yam ntawm cov hlau ua haujlwm, thiab yuav tsum tau siv ntau yam kev ua haujlwm ntawm cov hlau ua haujlwm, thiab yuav tsum tau siv ntau yam kev ua haujlwm ntawm cov hlau ua haujlwm, thiab yuav tsum tau siv ntau yam kev ua haujlwm ntawm cov hlau ua haujlwm, thiab yuav tsum tau siv ntau yam kev ua haujlwm ntawm cov hlau ua haujlwm, thiab yuav tsum tau siv ntau yam kev ua haujlwm ntawm cov hlau ua haujlwm, thiab yuav tsum tau siv ntau yam kev ua haujlwm ntawm cov hlau ua haujlwm, thiab yuav tsum tau siv ntau yam kev ua haujlwm ntawm cov hlau ua haujlwm, thiab yuav tsum tau siv cov khoom siv uas tsis tshua muaj zog, thiab txhua yam kev sib raug zoo ntawm cov hlau ua haujlwm, thiab txhua yam kev sib raug zoo ntawm cov hlau ua haujlwm, thiab yuav tsum tau siv ntau yam ntawm cov hlau ua haujlwm, thiab cov khoom siv sib txheeb, nws puas muaj kev sib txheeb, thiab muaj cov piv txwv suav nrog ntawm no. Cov xov xwm sib tsoo (npas, pas nrig, pas nrig thiab hnab ntim khoom) Siv hauv Ore thiab Cement Mills yog cov ntoo cov khau uas tau haus ntau. Hauv Tebchaws Meskas, feem ntau ntawm cov pob sib tsoo yog forged lossis nrum los ntawm cov roj carbon thiab alloy rau 97% ntawm tag nrho cov hniav sib tsoo. Hauv tebchaws Canada, Steel Balls account rau 81% ntawm cov khoom sib tsoo tau noj. Raws li cov txheeb cais ntawm cov 80s lig, Suav noj txog 80 ~ 1 lab ntawm cov pob zeb sib tsoo txhua xyoo, thiab txhua xyoo kev noj haus, feem ntau yog cov khoom lag luam steel. Lub puab tsaig nqus nruab nrab ntawm cov scraper conveyor rau cov roj av thee hauv Suav teb noj 6 ~ 80,} t hlau phiaj rau ib xyoos.