Introduction: I ka pili ʻana i nā ʻōnaehana paipu, hoʻomehana, a me nā ʻōnaehana hoʻoluʻu, ʻo nā paipu keleawe i koho mau ʻia ma muli o ko lākou maikaʻi maikaʻi ʻana i ka wela a me ka uila, ka pale ʻana i ka corrosion, ka ikaika, ka ductility, a me ke ʻano ākea o ka pale wela. E pili ana i nā makahiki he 10,000, ke kanaka mākou ...
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