He aha nā mea i hoʻohana ʻia i loko o ka wili paipu ERW?-ZTZG/erw pipe mill/erw tube mill

Nīnau: He aha nā mea i hoʻohana ʻia i ka wili paipu ERW?
A: Hoʻohana mua nā wili paipu ERW i nā wili kila wela.

Hana ʻia ke kila me ke kila kalapona haʻahaʻa, e hāʻawi ana i ka weldability maikaʻi a me ka formability.

Ke kila ikaika kiʻekiʻe Q460, Q700, etc