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PE-RTII预制直埋保管施工安装有哪些工艺？主要有什么注意事项

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PE-RTII预制直埋保管施工安装有哪些工艺？主要有什么注意事项

浏览：33次 | 提问时间： 08-04 11:55

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假朋友 08-04 11:56

直埋式高温蒸汽用预制保温管是地下直埋中的一种管道，采用没有混凝土结构的情况下也可以进行地下直埋的方式，即工作钢管的热膨胀在外管内进行，从而降低了材料成本，缩短了施工日期，并保障了供热管道的安全性，可以在不同温度环境下更安全的广泛应用，特别适用于高温蒸汽管道项目。使用温度可达150℃-450℃。内钢管选用二度无机富锌底漆（耐温≥400℃）防腐涂层，管道端口选用聚乙*薄膜或三层PE冷缠带密封，防止安装前进入潮气或施工中进入水。保温材料多层错缝包扎，有效减少了热损失，同时控制外套表面措施，防止了冷桥的产生，从而使外套防腐层的温度控制得到了保证。用保温材料包扎多层铝箔反射层，有效减少了热损失，使蒸汽管道更加经济合理

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