Ntụ ntụ mkpuchi Square Tube Iji Australia

Ndị ahịa Australia na-azụta paịpụ ntụ ntụ n'ụlọ ọrụ anyị. Ndị ahịa na-eji ya eme ihe maka ịgba ogige.

E nwere ụzọ mmepụta abụọ maka mkpuchi ntụ ntụ square tube:

1.balck square tube +spraying ntụ ntụ

2. tube square galvanized nke a na-etinye n'ime ihe mkpuchi + ntụ ntụ a na-agba