ʻO wai ka mea ʻoi aku ka maikaʻi o ka seamless a i ʻole ka paipu erw?
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Pehea e koho ai i ka astm a500 steel structural pipe grade ma muli o nā koi o ka papahana?
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He aha nā ʻokoʻa i ka hoʻomanawanui ʻana o ka paipu kila wela ma waena o nā ʻāina like ʻole?
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