Cov lus piav qhia luv luv:

Qhov kub-dip galvanized txiv ntoo yog sib xyaw nrog kub-dip galvanized ntsia liaj qhov rooj, uas yog, lub txiv ntoo reaming raug rau kub-dip galvanized nto kev kho mob. Vim tias kub galvanizing yog coated nrog zinc, reaming yog qhov tsim nyog. Kub galvanizing yog tsiag ntawv los ntawm cov npoo tsis ruaj tab sis muaj zog tiv thaiv corrosion. Nws feem ntau siv sab nraum zoov thiab muaj 4.8, 8.8, 10.9 thiab 12.9 lub zog muaj zog.