IF electric heating pipes are put into operation firstly,preheat the pipes to the maintenance temperature of media,then open valve.
IF electric heating pipes are put into operation firstly,preheat the pipes to the maintenance temperature of media,then open valve.
电伴热管线首次投运介质前，应先预热管道，使管壁温度达到介质维持温度后，再开启阀门。