A. Uma ubukhulu be-plating bungu-3-4 mm, ukunamathela kwe-zinc kufanele kube ngaphansi kuka-460g/m, okungukuthi, ubukhulu obujwayelekile bongqimba lwe-zinc abukho ngaphansi kwama-microns angu-65.
B. Uma ubukhulu be-plating bukhulu kuno-4 mm, ukunamathela kwe-zinc akufanele kube ngaphansi kuka-610g/m, okungukuthi, ubukhulu obuphakathi kwesendlalelo se-zinc akufanele kube ngaphansi kwama-microns angu-86.
C, ukufana kwe-coating: ungqimba lukathayela lufana ngokuyisisekelo nokuhlolwa kwesisombululo se-copper sulfate esiqoshwe izikhathi ezinhlanu ngaphandle kokudalula insimbi.
D, ukunamathela kokunamathela;Isendlalelo se-zinc sezingxenye zokucwenga kufanele sihlanganiswe ngokuqinile nesisekelo sensimbi esinamandla okwanele okunamathela, futhi ngeke siwe noma siqhume ngemva kokuhlolwa kwesando.
Isikhathi sokuthumela: 27-03-23