Be sure that valve is fully open. Apply heat to tube first. Transfer as much heat as possible throughtube into valve. Avoid prolonged heating of valve itself.
要确保阀门处于开启状态。先对管道加热。尽可能多的将热从管道传递到阀门。避免延长阀门本身的加热时间。
2
The report introduces fabricating and assembling process of fixed tube sheets type heat exchanger including tube bundle and shell, tubes passing throughtube-sheets , etc.
本文介绍了超细长比的大型列管式固定管板换热器管系构架组装，穿管和管系与壳体组装工艺。
3
Wind blows through the tube and makes it fly and dance around.