Issues with drilling and welding main pipes and branch pipes
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Excuse me, I have a main pipe with a diameter of DN50, to which two branch pipes with a diameter of DN32 are connected. Apart from using an eccentric tee, is it possible to weld the DN50 pipe to the DN32 pipes?
Common methods: one is to use a reducer, and the other is to drill a hole in the main pipe and weld a branch pipe there
You can speak up directly, as long as the owner agrees!
It’s best to use a tee! Party A will not agree! This is not either the practice of the construction company
It seems there are different pressure levels.
Check the pressure rating; there are other factors as well. Determine the locations for openings in the branch pipes by referring to the pipe rating table. 1. For low-pressure pipelines, openings can generally be made directly in the pipe. 2. Use reinforced versions when openings are made. 3. Use saddle-type pipe supports
Thank you. Are there any standards or guidelines in this area?
It is listed on both GB150 and GB0281
This material is easy to find, and it looks good when welded. There are many problems associated with welds made in holes, and it’s not cost-effective
I think it should be a DN50 tee, along with a DN50-DN32 reducer; this looks better and is more practical. It just does more work. According to the drawing requirements, as specified by the client.