double wall screw ripple pipe的意思|示意

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双壁螺纹波纹管

double wall screw ripple pipe的网络常见释义

螺旋双壁波纹管材 螺旋双壁波纹管材 double-walled spiral-corrugated pipelines ; double wall screw ripple pipe 双壁波纹管 double-wall corrugated pipe ; hdpe ; UPVC ; HDEP 聚乙烯双壁波纹管 PE HDPE ; PE Double wall corrugated pipe .