In service pipeline non-stop transmission welding is a method to maintenance and rebuild pipeline under welding pipe of certain transmission amount, flow speed, pressure status.
在役管道不停输焊接是在一定的输量、流速、压力的状态下焊接管件，对管道进行维修、改造的一种方法。
In service pipeline non-stop transmission welding is a method to maintenance and rebuild pipeline under welding pipe of certain transmission amount, flow speed, pressure status.
在役管道不停输焊接是在一定的输量、流速、压力的状态下焊接管件，对管道进行维修、改造的一种方法。
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