1. Defect characteristics
Unfused refers to the phenomenon that the weld metal is not completely melted and bonded with the base metal or between the layers of the weld metal.
Failure to penetrate ...
Tips for turning the heating valve on and off
For many families in the north, heating is not a new word, but an indispensable necessity for winter life. At present, there are many different functio...
First of all, whether it is a ball valve or a butterfly valve, etc., there are soft and hard seals, take the ball valve as an example, the use of soft and hard seals of ball valves is different, ma...
Today we continue to talk about valve installation precautions:
Taboo 7
When pipe welding, the wrong mouth after the pipe is not on a center line, no gap in the pair, the thick wall pipe does not s...
With the arrival of the first rain and snow in winter, the temperature dropped sharply. In this severe cold, the front-line emergency repair personnel of the Municipal Guokong Water Co., Ltd. brave...
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