Nrog rau txoj kev loj hlob ntawm kev lag luam roj av hauv Suav teb, cov kav dej galvanized steel tau nce siv los ua cov kav dej rau kev thauj cov roj av hauv cov roj av. Yog li ntawd, zinc coatings undergo ib co degree ntawm corrosion nyob rau hauv cov roj crude muaj hydrogen sulfide thiab nyob rau hauv aerated stratified dej uas muaj hydrogen sulfide. Yog li ntawd, qhov corrosion kuj ntawm galvanized steel kav nyob rau hauv cov roj ntau lawm tej yam kev mob yog heev txwv. Txawm li cas los xij, nws tseem tau tshaj tawm tias hauv cov dej hauv av uas muaj 240-400 mg / L ntawm hydrogen sulfide nyob ze ntawm cov roj qhov dej, lub neej ntawm cov kav dej galvanized yog 5 mus rau 6 npaug ntev dua li cov kav dej tsis huv.
Yog hais tias cov kav hlau galvanized yog annealed ntawm qhov kub ntawm 500 txog 550 degree rau kaum feeb, cov zinc txheej ntshiab tuaj yeem hloov mus rau hauv cov hlau-zinc alloy txheej. Qhov no alloyed galvanized steel yeeb nkab qhia tau zoo heev txhim kho corrosion kuj piv rau cov tsis-alloyed galvanized steel kav.
