·燃气用埋地聚乙烯（PE）管道 ( Buried PE Fuel Gas Pipes ) ·硬聚氯乙烯（PVC-U）螺旋缠绕管 (UPVC Spiral Twined Pipes) ·给水用聚乙烯（PE）管道 (PE pipes and Fittings for Water Supply) ..
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... 缠绕垫 wound gasket 缠绕法 method of winding on durm 缠绕管 hdpe spiral twined pipes; pks; upvc spiral twined pipes ...
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