Cov laj thawj yog vim li cas qee cov tib galvanized steel kav bend puas hnyav ntxiv tom qab dej txias

Thaum galvanized steel kav kav nrog ib tug kub ntawm ib ncig {}}} degree tau conveyed rau hauv dej los ntawm txoj saw, qhov nrawm tsis tau nrawm heev. Vim tias qhov xam tau ntev ntev nyob hauv cov kav dej kub ntev-dip galvanized, lawv yuav tsis tau hu rau cov dej txias txias ib txhij raws li lawv qhov ntev tag nrho. Yog li ntawd, cov seem ntawm cov yeeb nkab uas xub nkag mus rau hauv cov dej txias kom dhau mus sai sai, ua rau cov yeeb nkab kom khoov. Txawm hais tias tom qab tag nrho galvanized steel yeeb nkab yog submerged nyob rau hauv dej, nws tsis tuaj yeem ncaj ncaj. Qhov no yog vim li cas galvanized steel kav yuav dhau los ua ntau bent tom qab dej txias.