穿插法修复金属旧管道通常使用管材级高密度聚乙烯(HDPE)作为塑料内衬管。
The intercrossing method in repairing old metal pipes usually USES pipe-class high density polyethylene (HDPE) as lining plastic-underlayer pipes.
复合不锈钢管光纤单元，高强度钢丝内铠，金属管密封，高密度聚乙烯护套。
Composite stainless steel tube fiber unit, High strength steel wire armored inside. Hermetically metallic sealed, HDPE sheath.
复合不锈钢管光纤单元，高强度钢丝内铠，金属管密封，高密度聚乙烯护套。
Composite stainless steel tube fiber unit, High strength steel wire armored inside. Hermetically metallic sealed, HDPE sheath.
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