Ko ehea te Koreeke he kowiri tira ngongo porowhita?

Kowiri tira ngongo kowiri tira ,304 316 316L 304L he kowiri tira o te Kōeke ,Stainless ngongo pōkai kowiri he rota o Grade ,304304l 304H 316 316L 2205 310S 904L ect Grade ,304 me te 316L kōeke kowiri ngongo he kowiri tira. Ko te 304 me te 316 he parenga waikura me te parenga pāmahana teitei.