ʻO ka paipu mālamalama pololei
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ʻO ka pololei o loko a me waho o ka paipu hoʻomālamalama
ʻO ka pahu kukui pololei ke ʻano o nā mea kila kiʻekiʻe ma hope o ka hoʻopau ʻana i ke kaha kiʻi a i ʻole ka ʻōwili anu.No ka mea, ʻaʻohe papa oxide ma nā paia o loko a me waho o ka paipu kukui pololei, ʻaʻohe leakage ma lalo o ke kiʻekiʻe kiʻekiʻe, kiʻekiʻe kiʻekiʻe, kiʻekiʻe hoʻopau, anu anu me ka ʻole deformation, flaring, flattening me ka ʻole o nā māwae a pēlā aku, hoʻohana nui ʻia no ka ka hana ʻana o nā mea pneumatic a hydraulic paha.