What are the threaded holes on the flange of the quick-opening manhole of the swivel arch cover for?
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What are the threaded holes on the flange of the quick-opening manhole of the swivel arch cover for? I would appreciate some advice from those who are more experienced!
Hasn’t anyone studied this? It seems to be used for alignment, or as an exhaust vent similar to a support~
What was said upstairs – to check the welding quality of the flanges.
1. Exhaust function. 2. Perform a ventilation test to check the quality of the weld.
It is used to supply compressed air in order to check the quality of the welds between flanges and tube sections.
Thank you! Could you explain the inspection methods in detail? Is it similar to a pressure test?
In summary, this threaded hole is used to supply compressed air in order to check the quality of the welds between the flange and the tube section; it is sealed off with a plug. It’s useful to know this – thank you all for your help! I also want to ask how the quality of this weld is actually inspected – is it through a testing method similar to a pressure test? Are there any standards or criteria?