75PE 穿线管冬季施工:低温环境下的连接操作注意事项​

2025-09-19

在冬季进行75PE穿线管施工时,低温环境会给连接操作带来诸多挑战。施工前,要确保管材、管件在室内存放一定时间,使其温度接近施工环境温度,避免因温差大导致连接不良。连接时,若采用热熔连接,要严格控制加热时间和温度。低温会使加热速度变慢,需适当延长加热时间,但也不能过度,以免管材降解。加热完毕后,要迅速将管材、管件对准插入,插入过程中不能旋转,保证接口严密。若采用电熔连接,要检查电熔套筒是否受潮,受潮会影响连接效果。连接后,要让接口有足够的冷却时间,低温下冷却时间需适当延长,一般要达到常温下冷却时间的1.5倍左右。施工人员操作时要做好手部保暖,避免因手部僵硬影响操作精度。同时,施工现场要做好防风措施,大风会加速热量散失,干扰连接质量。只有充分注意这些低温环境下的连接操作要点,才能确保75PE穿线管冬季施工的质量和安全。



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