说明：
    本系列收集了自控仪表管路系统中各种连接形式和结构式管接头、短节、管嘴、转管接头温度计套管等产品，品种多、规格全，适用广，是管路中必不可少的连接件。堵头YZG16系列又称为丝堵。一般使用于已经开孔，安装了接头，但暂时又用不着的场合，或吹扫、试压、加液、排气、排污、排液等场合，或安装正式仪表条件不具备，用丝堵暂时堵上。该系列产品适用于各种测量回路或工艺设备上。
Explain:
    This series collects all kinds of connection forms and structural couplings, nipples, nozzles, rotary couplings, thermowells and other products in the automatic control instrument pipeline system. It is an essential connecting piece in the pipeline with a wide range of varieties, specifications and applications. Plug YZG16 series is also called plug. It is generally used in occasions where the hole has been opened and the joint has been installed, but it is not needed for the time being, or in occasions such as purging, pressure test, liquid filling, exhaust, sewage discharge, liquid drainage, etc., or where the conditions for installing the formal instrument are not available, plug it temporarily with a plug. This series of products is applicable to various measuring circuits or process equipment.