熔接参数（考数值为电承插热熔，热熔时间和冷却时间。
Welding parameter. ( Reference values for electric socket welding-welding time and cooling time.
有必要采用底漆来渗透和软化管道和管件承插端口表面，使得液状粘固剂能够完全粘结。
Primer is necessary to penetrate and soften both pipe and fitting socket surfaces in order for the solvent cement to properly bond.
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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