Ma kahi o 30 mau lā i hala aku nei, ua komo kekahi o kā mākou mea kūʻaiWiekanamakauoha ʻia he pūʻulu osnā papa kī. ʻO ka meaASTM A572 GR.50.

Ma ke ʻano he mea hana ʻoihana o nā flanges, nā mea hoʻopili paipu, nā paipu a me nā huahana paipu ʻē aʻe, hiki iā Hunan Great ke hana i nā ʻano paipu like ʻole. Inā he pono kāu, e ʻoluʻolu e kelepona mai iā mākou.