1. ʻO nā paipu kila welded no ka halihali wai haʻahaʻa haʻahaʻa (GB / T3092-1993) ua kapa ʻia hoʻi nā paipu welded maʻamau, i kapa ʻia ʻo nā paipu ʻeleʻele.He paipu kila welded no ka lawe ʻana i nā wai kaomi haʻahaʻa haʻahaʻa e like me ka wai, ke kinoea, ka ea, ka aila a me ka mahu mehana a me nā kumu ʻē aʻe.ʻO nā paipu kila he...
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