Presence of <br>functional <br>gap, the difference between surface <br>torque <br>components interfere with each <br>other <br>leakage of <br>the appearance of <br>a line to fixed <br>workers POST
Exist<br>functional<br>Gap, face difference<br>Torque<br>Parts interfere with each other<br>Other<br>Three leaks<br>Appearance<br>Pipeline direction, fixed<br>Workerself-inspection
existence<br>Functional<br>Gap, surface difference<br>torque<br>Components interfere with each other<br>Other<br>Three leaks<br>Appearance<br>Pipeline routing and fixation<br>Workers self checking