Joaloka e 'ngoe ea lihanger tsa tlholisano ka ho fetisisa k'hamphaning, likhoele tsa rona tse boima tsa u-straps li etselitsoe ebile li khothalletsoa ho hloa liphaephe tse koahetsoeng kapa tse sa koaeloang,' me li ka sebelisoa ka lisebelisoa tsa tšehetso ea rabara. Mme ba fumane botumo bo boholo lefats'eng ka bophara, haholo Amerika Leboea, Amerika Boroa, Middle East le Asia. Hape, ho na le mekhoa ea kalafo e fapaneng ea bokaholimo bakeng sa khetho ea hau: E entsoe ka pele, e koetsoe ka Zinc, epoxy le Green galvanized ho fihlela litlhoko tsa hau tsa anticorrosion.