Ihe mkpuchi mkpuchi nke eriri galvalume steel bụ Zn-Al alloy, ihe mkpuchi mkpuchi bụ 55% Al, 43.3% Zn na 1.6% Si.N'ihi nguzogide corrosion ya magburu onwe ya, a na-eji ụdị ígwè a eme ihe n'ụwa nile.
Mmepe nke aluzinc ígwè.N'ihe gbasara ọkọnọ na ọchịchọ, ka ọtụtụ afọ nke mgbanwe na asọmpi ahịa gasịrị, ụlọ ọrụ China galvalume steel coil ụlọ ọrụ ejirila nwayọọ nwayọọ kwụsie ike.Mmekọrịta n'ahịa na ihe ndị na-achọsi ike bụ nke ziri ezi.Ọnụego mmepụta na ahịa dị n'elu 90% kwa afọ, a na-ebupụkwa nnukwu ngwaahịa ngwaahịa kwa afọ.