Hexagonal guardrail makonda dzimbiri anataya makhalidwe oyambirira, mwa mawu a mawonekedwe, mtundu ndi katundu makina adzasintha, chifukwa cha kuwonongeka kwa zida, kutayikira payipi, makamaka, n'zosavuta kuthyoka, kutaya ntchito chitetezo choyambirira.Zimbiri nthawi zambiri zitsulo corrosio ...
Werengani zambiri