Flange cover opening welding problem
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Please help everyone with a question: There is a DN100 flange cover with a DN40 pipe passing through it, and an opening needs to be made on it. How big of a hole should be made in the flange cover, and how to weld it to the end of the pipe?
Is the pipe extending in or is the nozzle welded on the flange mountain?
You can directly drill DN40 holes and then weld directly.
The diameter is 1m larger than the diameter of DN40, and a 45 degree x 5 bevel is made at the opening. Both sides of the flange must be beveled
Thank you everyone, it's the pipe that goes in. Excuse me, pipe200, both sides of the flange cover must have 45 degree X5 bevels. Does 5 mean 5mm? Does the side of the flange cover gasket also need to be welded?
5mm is the length of the hypotenuse, and both sides must be welded. You can calculate that the minimum weld for this groove is 4mm. If your pipe wall is thicker, make the bevel wider. This post was last edited by pipe200 on 2007-12-19 18:00 ]
Now there is a high-pressure flange cover, the pressure level is PN15.0, the DN100 flange cover has a DN40 hole, the outer diameter of the pipe is 48, how to bevel the flange cover, thank you!
I also encountered this problem, please explain in detail, thank you.
I would like to ask, after the welding is completed, whether the back side of the flange cover needs to be machined to a flat surface.