HDPE pipe to connect the use of hot-melt or fused welded casing connection.
管采用热熔对焊连接或电熔套管连接。
It has reference role to the researches, manufacture and the usage of straight welded casing in our nation.
对我国有关单位今后研究、生产、使用直缝焊接套管有参考作用。
It has reference role to the researches, manufacture and the usage of straight welded casing in our nation.
对我国有关单位今后研究、生产、使用直缝焊接套管有参考作用。
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