膠圈電熔雙密封聚乙烯復合管RESP
膠圈電熔雙密封聚乙烯復合管材
polyethylene composite pipes with double seals jointing
of rubber ring and electric melting
一端具有膠圈電熔雙密封接口的聚乙烯復合管材?？s寫為 RESP。
膠圈電熔雙密封聚乙烯復合管件 pipe fittings with double seals jointing of rubber ring and
electric melting
一端或兩端具有膠圈電熔雙密封接口的聚乙烯復合管件?？s寫為 RESF。
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