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3PE管道防腐壓敏膠型熱收縮帶的施工要求

發布時間: 2019-08-06

 

  選擇壓敏膠型熱收縮帶管道防腐補口前須對補口部位進行清理,將焊縫和兩側連接預留部分的毛刺、焊渣、污物、油及其雜物清理干凈。對補口部位表面進行除銹處理,表面除銹處理質量達到涂裝前鋼管表面處理等級,可選用噴沙或電動工具除銹;對補口與原聚乙烯防腐層搭接部位打磨至表面粗糙,其端部進行倒角坡口處理,坡角不大于30°。管道防腐壓敏膠型熱收縮帶與原聚乙烯防腐層搭接寬度應不小于55mm。若施工環境濕度大于85或下雨、雪天禁止止施工。

 

  壓敏膠型熱收縮帶安裝施工完畢,表面應光滑平整、無皺折、無氣泡,沒有碳化現象,兩端坡角處與熱縮套貼合緊密、無空隙,壓敏膠型熱收縮帶周向應有管道防腐熱熔膠粘劑均勻溢出。

 

 

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