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这种连接适用于各种压力和温度，在较荷刻的条件下使用时，比法兰连接更为可靠。但是焊接连接的阀门拆卸和重新安装都比较困难，所以它的使用限于通常能长期可靠地运行，或使用条件荷刻、温度较高的场合。如火力发电站、核能工程、乙烯工程的管道上。
公称通径在50mm以下的焊接阀门通常具有焊接插口来承接荷平面端的管道。由于承插焊接在插口与管道间形成缝隙，因而有可能使缝隙受到某些介质的腐蚀，同时管道的振动会使连接部位疲劳，因此承插焊接的使用受到一定的限制。
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