针对两种均已获燃气管网认证的聚酰胺树脂——聚酰胺11（PA11）和聚酰胺12（PA12）——开展了一项测试方案。聚酰胺的优势在于其施工方式与聚乙烯相似，且其性能使其……
A test program was carried out on two Polyamide resins, Polyamide 11 (PA11) and Polyamide 12 (PA12), both certified for gas networks. Polyamide’s advantage lies in its implementation, similar to that of polyethylene, and its properties allowing it...