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TPEP防腐钢管的防腐技术如何
TPEP防腐钢管，即外缠绕聚乙烯内熔结环氧防腐钢管。那么，这款管道为什么能够成为第四代长距离输水管线的防腐技术呢？
IPN8710/3pe防腐螺旋焊接钢管环氧煤沥青三油两布防腐焊接钢管89/114
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