复合管道 meaning in Chinese

compound pipeline complex pipeline

Extra - thin - wall stainless steel and plastic composite pipeline
超薄壁不锈钢复合管道
Features of ceramic compound tube
陶瓷复合管道的特点
Specification for acrylonitrile - butadiene - styrene and poly vinyl chloride composite sewer piping
Abs和pvc复合管道规范
Standard specification for pressure - rated composite pipe and fittings for elevated temperature service
高温设备用标定压力的复合管道及其配件标准规范
Question 4 : how is multilayer composite pipe of pe / steel / pe used in overseas market and if they are much in use
问题四：聚乙烯/钢管/聚乙烯多层复合管道在国外的使用情况？

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