这个标准涵盖采用承插热熔和对焊热熔方法对聚烯烃材料管道和连接件进行热连接的程序。

This standard covers the procedures for the heat joining of pipe and fittings made from polyolefin materials utilizing either the socket or butt fusion methods.

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加工成承插焊和螺纹混合的连接型式。

Fittings can also be processed into the combination models of socket and threading.

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