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青龍管業(002457.SZ)取得1項實用新型專利證書
格隆匯 04-13 12:32

格隆匯4月13日丨青龍管業(002457.SZ)公佈,近日,公司收到中華人民共和國國家知識產權局頒發的一項實用新型專利證書。專利名稱:頂進施工用管道;專利號:ZL 2021 2 2957702.7;有效期:十年(自專利申請日起算)。

該申請涉及管道設備技術領域,尤其是涉及一種頂進施工用管道。該頂進施工用管道,屬於非預應力結構,不會發生應力腐蝕破壞,對於高鹼性環境的適應能力強,混凝土層、砂漿層的抗壓性能與鋼管共同承受外載荷及軸向頂力,能夠提高該頂進施工用管道的承受外壓以及承受軸向頂力的能力,使得該頂進施工用管道能夠滿足大口徑、高工壓和深覆土的設計使用要求。

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