Hana ʻia nā paipu seamless mai nā tube blanks o nā kikoʻī like ʻole ma o ka extrusion kiʻekiʻe-mehana, hoʻomaha, annealing, hoʻopau a me nā kaʻina hana ʻē aʻe. ʻO ia kekahi o nā ʻano kila hana nui ʻehā ma koʻu ʻāina. Hoʻohana nui ʻia no ka lawe ʻana i nā wai e like me ka wai, ka aila, ka g ...
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