Roj hmab yog cov kua nplaum uas muaj kev ruaj ntseg heev, siv rau txhua daim kab xev, qhov kev ua tau zoo ntawm daim kab xev yuav siab dua qhov kev ua tau zoo ntawm cov kua nplaum zoo tib yam, tsis muaj qhov tshwj xeeb, roj hmab-coated roj hmab daim kab xev, qhov kev ua tau zoo kuj zoo dua, dab tsi yog qhov zoo ntawm cov ntaub nplaum roj hmab hauv cov khoom no, cia peb saib.
Roj Hmab daim kab xev yog ib qho ntawm ob peb daim kab xev uas tuaj yeem tiv taus qhov kub thiab txias, nws tuaj yeem tiv taus li 80 degrees ntawm qhov nruab nrab kub, nplaum nplaum liab yog xim av, yog li nws tseem hu ua liab roj hmab av nplaum xim av daim kab xev, nws cov kua nplaum ruaj khov dua. Kub yaj nplaum nplaum, yuav tsis tau glued, nrog waterproof, siab viscosity, corrosion kuj, xeb kuj, muaj zog kuj, thiab lwm yam., tuaj yeem hloov mus rau qhov chaw ua haujlwm hnyav, xws li bilge, hauv qab daus thiab lwm yam. Cov roj hmab liab tuaj yeem siv ntau dua hauv cov dej ntub dej, acidic, alkaline hauv qab daus, nkoj loj bilges, mines, rhiav thiab lwm qhov chaw raug steel pipeline winding thiab kev tiv thaiv, roj hmab liab muaj nyob rau hauv cov khoom tiv thaiv xeb tuaj yeem muaj me ntsis oxidation xeb ntawm cov hlau nto. tiv thaiv xeb txuas ntxiv.
