大连物资回收在钛坨的上表皮、底皮和部分边皮, 被氯、氧、氮和铁等杂质严重沾污, 其重量占整个钛坨的6-8% ,不符合作为加工钛材的原料。石油化工等行业对于材料的耐腐蚀性有更高的要求，钛质管材以其良好的耐腐蚀性以及加工性能在石油化工和海洋工程等领域大量应用。

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