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噴涂纏繞式預(yù)制直埋保溫管

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噴涂纏繞式預(yù)制直埋保溫管

采用管道噴涂高壓發(fā)泡機(jī)和高密度聚乙烯擠出纏繞設(shè)備，以連續(xù)自動化作業(yè)方式生產(chǎn)的三位一體式保溫管。