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聚氨酯直埋保温管的结构技术特点有哪些?

作者:http://deedahzaib.com 时间:2019-12-23 15:54:55

1、聚氨酯直埋保温管学生党怎么赚钱由于保温层与外护管之间有一层空气层,管道在运输及施工过程中浸的水可在逐步暖管过程中排出,因而比较适合于雨量充沛、水位高的地区。但对于氯离子、硫离子等含量比较高的土壤(尤其在沿海地区),对外钢管的防腐需加强。

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