Sincaseun lub nrawm tuaj yeem tsim thiab muab:
Pob zeb ua pob zeb ua ke, tseem hu ua hlau ntsia hlau, steelry ntsia hlau yog feem ntau yog ua los ntawm cov roj carbon hlau, tuab, luv, muaj cov zog rau lub zog. Qhob ntsia hlau, feem ntau yog hu ua steel ntsia hlau, siv cov steel hlau ntau lawm, ib qho kev kos duab, xws li cov khoom ntsia hlau, yog li cov khoom siv tsis zoo. Nws yog txoj haujlwm ntawm cov ntsia hlau nyob rau qee cov ntsia hlau rau lwm ntsia rau ntawm cov khoom, vim tias cov khoom sib txawv nrog cov ntsia hlau dog dig, yog rau cov ntsia hlau tshwj xeeb. Pob zeb ua pob zeb nyuaj yog qhov loj heev, tuab, luv, tsim muaj peev xwm muaj zog heev. Qhob ntsia hlau tus pas tau muaj swb, ncaj nplej, twill, kauv, kauv, xyoob thiab xaub. Raws li kev faib tawm sib txawv, cov ntsia hlau pob zeb tuaj yeem muab faib ua: Counter pob zeb ua pob zeb lossis pob zeb Nws yog qhov nyuaj dua, cov shak luv luv thiab tuab thiab nws muaj kev sib tw zoo nkauj thiab txhim kho lub zog. Nrog cov nta no, pob qhob ntsia ua rau cov ntsia hlau zoo tshaj plaws thiab cov fasteners rau cov chaw ruaj thiab muaj zog. Galvanized concretenail muaj kev tawm tsam zoo tshaj plaws, tiv thaiv kev tiv thaiv thiab kev nyab xeeb siv vim kev ua cov thev naus laus zis siab dua. Nws yog tsim los ntawm kev ua tau zoo ntawm cov ntsia hlau nto tuaj yeem ua polished, electro galvanizing, blackish, thiab lwm yam.