Cov kab galvanizing tuaj yeem tuav cov hlau tsis tshua muaj carbon steel nrog cov khoom siv hluav taws xob ntxiv los yog cov hlau carbon siab tsis muaj kev kho cua sov.Peb muaj ob qho tib si PAD so system thiab tag nrho-auto N2 so system los tsim cov txheej txheem sib txawv hnyav galvanized hlau cov khoom.