Mill nplai yog ib txheej ntawm cov hlau oxides (FeO, Fe₃O₄, Fe₂O₃) uas tsim rau saum npoo ntawm cov hlau thaum kub dov thaum cov hlau kub raug cua. Nws yog xiav -dub, nkig, thiab tuaj yeem tawg tawm. Rau feem ntau cov ntawv pleev xim lossis galvanizing, cov nplai zeb yuav tsum raug tshem tawm vim nws tsis zoo thiab tuaj yeem cuam tshuam lub neej txheej. Cov kev tshem tawm uas muaj xws li:
Abrasive Blasting:Txoj kev lag luam zoo tshaj plaws (steev lossis grit blasting).
Pickling:Immersion nyob rau hauv ib tug acid da dej (hydrochloric los yog sulfuric).
Fais fab cuab yeej tu:Rau me me - nplai lossis ntawm - chaw ua haujlwm.