The paper introduced pipe internal welding machine's composition, necessary equipment and unique advantage in large diameter thick wall pipe construction.
介绍管道内焊机的结构、配套设备及在大口径厚壁管道施工中的独到优点。
Special design of basket die head of for HDPE(PP, ABS) large diameter pipe with thick wall offer lower melting temperature, good mixing, lower pressure of cavity , and stable production.
特殊设计的HDPE（PP，ABS）篮式膜具，使溶解温度更低，拥有好的混合效果，低的机头压力，并有好的稳定产量。
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